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Thehistory ofNative Americans in the United States began thousands of years ago with the settlement of the Americas by thePaleo-Indians. The Eurasian migration to the Americas occurred over 4000 years ago, a land bridge betweenSiberia andAlaska, as early humans spread southward and eastward, forming distinct cultures. Archaeological evidence suggests these migrations began 4,000 years ago and continued until around 3,000 years ago, with some of the earliest recognized inhabitants classified as Paleo-Indians, who spread throughout the Americas, diversifying into numerous culturally distinct nations. Major Paleo-Indian cultures included theClovis andFolsom traditions, identified through unique spear points and large-game hunting methods, especially during theLithic stage.
Around 3000 BCE, as the climate stabilized, new cultural periods like theArchaic stage arose, during which hunter-gatherer communities developed complex societies across North America. TheMound Builders created large earthworks, such as atWatson Brake andPoverty Point, which date to 3500 BCE and 2200 BCE, respectively, indicating early social and organizational complexity. By 1000 BCE, Native societies in theWoodland period developed advanced social structures and trade networks, with theHopewell tradition connecting the Eastern Woodlands to theGreat Lakes and theGulf of Mexico. This period led to theMississippian culture, with large urban centers likeCahokia—a city with complex mounds and a population exceeding 20,000 by 1250 CE.From the 15th century onward, European contact drastically reshaped the Americas. Explorers and settlers introduced diseases, causing massive Indigenous population declines, and engaged in violent conflicts with Native groups. By the 19th century, westward U.S. expansion, rationalized byManifest destiny, pressured tribes into forced relocations like theTrail of Tears, which decimated communities and redefined Native territories. Despite resistance in events like theSioux Uprising andBattle of Little Bighorn, Native American lands continued to be reduced through policies like theIndian Removal Act of 1830 and later theDawes Act, which undermined communal landholding.
In the 20th century, Native Americans served in significant numbers during World War II, marking a turning point for Indigenous visibility and involvement in broader American society. Post-war, Native activism grew, with movements such as theAmerican Indian Movement (AIM) drawing attention to Indigenous rights. Landmark legislation like theIndian Self-Determination and Education Assistance Act of 1975 recognized tribal autonomy, leading to the establishment of Native-run schools and economic initiatives. By the 21st century, Native Americans had achieved increased control over tribal lands and resources, although many communities continue to grapple with the legacy of displacement and economic challenges. Urban migration has also grown, with over 70% of Native Americans residing in cities by 2012, navigating issues of cultural preservation and discrimination. Continuing legal and social efforts address these concerns, building on centuries of resilience and adaptation that characterize Indigenous history across the Americas.

According to the most generally accepted theory of thesettlement of the Americas, migrations of humans fromEurasia to the Americas took place viaBeringia, aland bridge which connected the two continents across what is now theBering Strait. The number and composition of the successive migrations is still being debated.[1] Fallingsea levels associated with an intensive period ofQuaternary glaciation created theBering land bridge that joinedSiberia toAlaska about 60–25,000 years ago.[1][2] The latest this migration could have taken place is 12,000 years ago; the earliest remains undetermined.[3][4]Thearchaeological periods used are the classifications of archaeological periods and cultures established inGordon Willey andPhilip Phillips' 1958 bookMethod and Theory in American Archaeology which divided the archaeological record in the Americas into five phases;[5] seeArchaeology of the Americas.

The Paleo-Indian or Lithic stage lasted from the first arrival of people in the Americas until about 5000/3000 BC (in North America). Three major migrations occurred, as traced by linguistic and genetic data; the earlyPaleoamericans soon spread throughout the Americas, diversifying into many hundreds of culturally distinct nations and tribes.[6][7] By 8000 BC the North American climate was very similar to today's.[8] A study published in 2012 gives genetic backing to the 1986 theory put forward by linguistJoseph Greenberg that the Americas must have been populated in three waves, based on language differences.[9][10]
TheClovis culture, amegafauna hunting culture, is primarily identified by use of flutedspear points. Artifacts from this culture were first excavated in 1932 nearClovis, New Mexico. The Clovis culture ranged over much of North America and also appeared in South America. The culture is identified by the distinctiveClovis point, a flaked flint spear-point with a notched flute, by which it was inserted into a shaft. Dating of Clovis materials has been by association with animal bones and by the use ofcarbon dating methods. Recent reexaminations of Clovis materials using improved carbon-dating methods produced results of 11,050 and 10,800 radiocarbon yearsBP (roughly 9100 to 8850 BCE).
NumerousPaleoindian cultures occupied North America, with some arrayed around theGreat Plains andGreat Lakes of the modern United States of America and Canada, as well as adjacent areas to the West and Southwest. According to the oral histories of many of the Indigenous peoples of the Americas, they have been living on the continents since their genesis, described by a wide range of traditionalcreation stories. Other tribes have stories that recount migrations across long tracts of land and a great river believed to be theMississippi River.[11] Genetic and linguistic data connect the Indigenous people of this continent with ancient northeast Asians. Archeological and linguistic data has enabled scholars to discover some of the migrations within the Americas.

TheFolsom tradition was characterized by the use ofFolsom points as projectile tips and activities known from kill sites, where slaughter and butchering ofbison took place. Folsom tools were left behind between 9000 BCE and 8000 BCE.[12]
Na-Dené-speaking peoples entered North America starting around 8000 BC, reaching thePacific Northwest by 5000 BC,[13] and from there migrating along thePacific Coast and into the interior. Linguists, anthropologists, and archeologists believe their ancestors constituted a separate migration into North America, later than the first Paleo-Indians. They migrated into Alaska and northern Canada, south along the Pacific Coast, into the interior of Canada, and south to the Great Plains and the American Southwest.
They were the earliest ancestors of theAthabascan-speaking peoples, including the present-day and historicalNavajo andApache. They constructed large multi-family dwellings in their villages, which were used seasonally. People did not live there year-round, but for the summer to hunt and fish, and to gather food supplies for the winter.[14]
The Archaic period lasted until about 1000 BC. A major culture of the Archaic stage was theMound builders, who stretched from theGreat Lakes to theMississippi andOhio rivers. Since the 1990s, archeologists have explored and dated eleven MiddleArchaic sites in present-day Louisiana and Florida at which early cultures built complexes with multipleearthworkmounds; they were societies of hunter-gatherers rather than the settled agriculturalists believed necessary according to the theory ofNeolithic Revolution to sustain such large villages over long periods. Native American cultures are not included in characterizations of advanced Stone Age cultures as "Neolithic," which is a category that more often includes only the cultures in Eurasia, Africa, and other regions.

The prime example isWatson Brake in northern Louisiana, whose 11-mound complex is dated to 3500 BC, making it the oldest dated site in the Americas for such complex construction. It is nearly 2,000 years older than thePoverty Point site. Construction of the mounds went on for 500 years until it was abandoned about 2800 BC, probably due to changing environmental conditions.[15]
Poverty Point culture is a Late Archaicarchaeological culture that inhabited the area of the lower Mississippi Valley and surrounding Gulf Coast. The culture thrived from 2200 BC to 700 BC, during the Late Archaic period.[16] Evidence of this culture has been found at more than 100 sites, from the major complex atPoverty Point, Louisiana (aUNESCO World Heritage site) across a 100-mile (160 km) range to theJaketown Site nearBelzoni, Mississippi.
Poverty Point is a 1 square mile (2.6 km2) complex of six major earthwork concentric rings, with additional platform mounds at the site. Artifacts show the people traded with other Native Americans located from Georgia to the Great Lakes region. This is one among numerous mound sites of complex indigenous cultures throughout the Mississippi and Ohio valleys. They were one of several succeeding cultures often referred to asmound builders.
TheOshara tradition people lived from 5500 BC to 600 CE. They were part of theSouthwestern Archaic tradition centered in north-centralNew Mexico, theSan Juan Basin, theRio Grande Valley, southernColorado, and southeasternUtah.
The Post-Archaic stage includes the Formative, Classic and Post-Classic stages in Willey and Phillipp's scheme. The Formative stage lasted from 1000 BC until about 500 CE, the Classic from about 500 CE to 1200 CE, while the Post-Classic refers to 1200 CE until the present day. It also includes theWoodland period ofNorth Americanpre-Columbian, whose culture refers to the time period from roughly 1000 BC to 1000 CE in the eastern part of North America.

The term "Woodland" was coined in the 1930s and refers to prehistoric sites dated between theArchaic period and theMississippian cultures. TheAdena culture was aNative American culture that existed from 1000 BC to 200 BC, in a time known as theEarly Woodland period. The Adena culture refers to what was probably a number of related Native American societies sharing a burial complex and ceremonial system.
TheHopewell tradition is the term for the common aspects of the Woodland period culture that flourished along rivers in theEastern Woodlands from 200 BC to 500 CE.[17] The Hopewell tradition was not a singleculture or society, but a widely dispersed set of related populations, who were connected by a common network of trade routes,[18] known as the Hopewell Exchange System. At its greatest extent, the Hopewell exchange system ran from theSoutheastern Woodlands into the northern shores ofLake Ontario. Within this area, societies participated in a high degree of exchange; most activities were conducted along the waterways that served as their major transportation routes. The Hopewell exchange system traded materials from all over North America.

TheColes Creek culture was an indigenous development of the Lower Mississippi Valley that took place between the lateWoodland period and the laterPlaquemine culture period. The period is marked by the increased use of flat-toppedplatform mounds arranged around central plazas, more complex political institutions, and a subsistence strategy still grounded in theEastern Agricultural Complex and hunting rather than on themaize plant as would happen in the succeedingPlaquemine Mississippian period. The culture was originally defined by the unique decoration ongrog-tempered ceramic ware byJames A. Ford after his investigations at theMazique Archeological Site. He had studied both the Mazique and Coles Creek Sites, and almost went with theMazique culture, but decided on the less historically involved sites name. It is ancestral to thePlaquemine culture.
The Mississippian culture which extended throughout the Ohio and Mississippi valleys and built sites throughout the Southeast created the largestearthworks in North America north of Mexico, most notably atCahokia, on a tributary of the Mississippi River in present-day Illinois.

TheHohokam culture was centered alongAmerican Southwest.[24] The early Hohokam founded a series of small villages along the middleGila River. They raised corn, squash, and beans. The communities were near good arable land, withdry farming common in the earlier years of this period.[24] They were known for their pottery, using the paddle-and-anvil technique. The Classical period of the culture saw the rise in architecture and ceramics. Buildings were grouped into walled compounds, as well as earthen platform mounds. Platform mounds were built along river as well as irrigation canal systems, suggesting these sites were administrative centers allocating water and coordinating canal labor. Polychrome pottery appeared, and inhumation burial replaced cremation. The trade included that of shells and other exotics. Social and climatic factors led to a decline and abandonment of the area after 1400 CE.
TheAncestral Puebloan culture covered present-dayFour Corners region of the United States, comprising southernUtah, northernArizona, northwesternNew Mexico, and southwesternColorado.[25] It is believed that the Ancestral Puebloans developed, at least in part, from theOshara tradition, who developed from thePicosa culture. They lived in a range of structures that included small family pit houses, larger clan type structures, grandpueblos, and cliff sited dwellings. The Ancestral Puebloans possessed a complex network that stretched across theColorado Plateau linking hundreds of communities and population centers. The culture is perhaps best known for the stone and earth dwellings built along cliff walls, particularly during thePueblo II andPueblo III eras.

TheIroquois League of Nations or "People of the Long House", based in present-day upstate and westernNew York, had aconfederacy model from the mid-15th century. It has been suggested that their culture contributed to political thinking during the development of the later United States government. Their system of affiliation was a kind of federation, different from the strong, centralized European monarchies.[26][27]

After 1492,Europeanexploration and colonization of the Americas revolutionized how theOld andNew Worlds perceived themselves. One of the first major contacts, in what would be called the AmericanDeep South, occurred when the conquistadorJuan Ponce de León landed inLa Florida in April 1513. He was later followed by other Spanish explorers, such asPánfilo de Narváez in 1528 andHernando de Soto in 1539. The subsequentEuropean colonists in North America often rationalized their expansion of empire with the assumption that they were saving a barbaric, pagan world by spreadingChristian civilization.[29]
In theSpanish colonization of the Americas, the policy ofIndian Reductions resulted in the forced conversions to Catholicism of theIndigenous people in northernNueva España. They had long-establishedspiritual andreligious traditions andtheological beliefs which included human sacrifice. What developed during the colonial years and since has been a syncretic Catholicism that absorbed and reflected indigenous beliefs; the religion changed in New Spain.
From the 18th through the 19th centuries, the population of Native Americans declined in the following ways:epidemic diseases brought from Europe;violence and warfare, such as theIndian Wars[30] at the hands of European explorers and colonists; displacement from their lands including forced marches such as theTrail of Tears resulted in many deaths as didenslavement; continued tribalinternal warfare;[31] and a high rate ofintermarriage also led to a reduction in the numbers of Native Americans.[32][33] Most mainstream scholars believe that, among the various contributing factors,epidemicdisease was the overwhelming cause of the population decline of the American natives because of their lack ofimmunity to new diseases brought from Europe.[34][35][36] With the rapid declines of some populations and continuing rivalries among their nations, Native Americans sometimes re-organized to form new cultural groups, such as theSeminoles of Florida in the 19th century and theMission Indians ofAlta California. Some scholars characterize the treatment of Native Americans by the US asgenocide orgenocidal whilst others dispute this characterization.[30][37][38]
Estimating the number of Native Americans living in what is today the United States of America before the arrival of the European explorers and settlers has been the subject of much debate. While it is difficult to determine exactly how many Natives lived in North America before Columbus,[39] estimates range from a low of 2.1 million (Ubelaker 1976) to 7 million people (Russell Thornton) to a high of 18 million (Dobyns 1983).[38] A low estimate of around 1 million was first posited by the anthropologistJames Mooney in the 1890s, by calculating the population density of each culture area based on itscarrying capacity.
In 1965, the AmericananthropologistHenry F. Dobyns published studies estimating the original population to have been 10 to 12 million. By 1983, he increased his estimates to 18 million.[37][40][41] HistorianDavid Henige criticized higher estimates such as those of Dobyns', writing that many population figures are the result of arbitrary formulas selectively applied to numbers from unreliable historical sources.[42] By 1800, the Native population of the present-day United States had declined to approximately 600,000, and only 250,000 Native Americans remained in the 1890s.[43]

Chickenpox andmeasles,endemic but rarely fatal among Europeans (long after being introduced fromAsia), often proved deadly to Native Americans.Smallpoxepidemics often immediately followed European exploration and sometimes destroyed entire village populations. While precise figures are difficult to determine, some historians estimate that at least 30% (and sometimes 50% to 70%) of someNative populations died after first contact due to Eurasian smallpox.[44][45] One element of theColumbian exchange suggests explorers from theChristopher Columbus expedition contractedsyphilis from Indigenous peoples and carried it back to Europe, where it spread widely.[46] Other researchers believe that the disease existed in Europe andAsia before Columbus and his men returned from exposure to Indigenous peoples of the Americas, but that they brought back a more virulent form.
In the 100 years following the arrival of the Spanish to the Americas, large disease epidemics depopulated large parts of the Eastern Woodlands in the 15th century.[47] In 1618–1619, smallpox killed 90% of the Native Americans in the area of theMassachusetts Bay.[48] Historians believe many Mohawk in present-day New York became infected after contact with children ofDutch traders inAlbany in 1634. The disease swept through Mohawk villages, reaching the Onondaga atLake Ontario by 1636, and the lands of the westernIroquois by 1679, as it was carried by Mohawk and other Native Americans who traveled the trading routes.[49] The high rate of fatalities caused breakdowns in Native American societies and disrupted generational exchange of culture.

After European explorers reached the West Coast in the 1770s, smallpox rapidly killed at least 30% ofNorthwest Coast Native Americans. For the next 80 to 100 years, smallpox and other diseases devastated native populations in the region.[51]Puget Sound area populations, once estimated as high as 37,000 people, were reduced to only 9,000 survivors by the time settlers arrived en masse in the mid-19th century.[52] TheSpanish missions in California did not have a large effect on the overallpopulation of Native Americans because the small number of missions was concentrated in a small area along the southern and central coast. The number of Indigenous people decreased more rapidly after California ceased to be a Spanish colony, especially during the second half of the 19th century and the beginning of the 20th (see chart on the right).
Smallpox epidemics in1780–1782 and1837–1838 brought devastation and drastic depopulation among thePlains Indians.[53][54] By 1832, the federal government established asmallpox vaccination program for Native Americans (The Indian Vaccination Act of 1832). It was the first federal program created to address the health problems of Native Americans.[55][56]
With the meeting of two worlds, animals, insects, and plants were carried from one to the other, both deliberately and by chance, in what is called theColumbian exchange. Sheep, pigs, horses, and cattle were all Old World animals that were introduced to contemporary Native Americans who never knew such animals.[57]
In the 16th century, Spaniards and other Europeans broughthorses to Mexico. Some of the horses escaped and began to breed and increase their numbers in the wild. The earlyAmerican horse had been game for the earliest humans on the continent. It was hunted to extinction about 7000 BC, just after the end of thelast glacial period.[citation needed] Native Americans benefited from the reintroduction of horses, as they adopted the use of the animals, they began to change their cultures in substantial ways, especially by extending their nomadic ranges for hunting.
The reintroduction of the horse toNorth America had a profound impact onNative American culture of the Great Plains. The tribes trained and used horses to ride and to carry packs or pulltravois. The people fully incorporated the use of horses into their societies and expanded their territories. They used horses to carry goods for exchange with neighboring tribes, to huntgame, especiallybison, and to conduct wars and horse raids.
The 16th century saw the first contacts between Native Americans in what was to become the United States and European explorers and settlers.
One of the first major contacts, in what would be called the AmericanDeep South, occurred when the conquistadorJuan Ponce de León landed inLa Florida in April 1513. There he encountered the Timucuan and Ais peoples.[58] De León returned in 1521 in an attempt at colonization, but after fierce resistance from theCalusa people, the attempt was abandoned. He was later followed by other Spanish explorers, such asPánfilo de Narváez in 1528 andHernando de Soto in 1539.
In 1536, a group of four Spanish explorers and one enslaved black Moorish man, found themselves stranded on the coast of what is now Texas.[59] The group was led byÁlvar Núñez Cabeza de Vaca, and for a time they were held in semi captivity by the coastal natives.[60] The enslaved Moor, whose name was Esteban, later became a scout who had encounters with theZunis.[60] Rumors of the fabledSeven Cities of Gold being located in the northern area of New Spain began to emerge amongst the Spaniards. And in 1540Francisco Vázquez de Coronado, using the information gained by the scouting expeditions of Esteban and Fray Marcos, set out to conquerCíbola.[59] Coronado and his band of over one thousand found no cities of gold. What the conquistadors did encounter was Hawikuh, a Zuni town. There the Zuni people, having never seen horses or a band of this size before, were frightened. Although Coronado had been explicitly instructed not to harm the natives, when the Zuni refused his insistence for food and supplies, Coronado ordered an attack on the town.[58]
Through the mid 17th century theBeaver Wars were fought over the fur trade between theIroquois and theHurons, the northernAlgonquians, and their French allies. During the war the Iroquois destroyed several large tribal confederacies—including theHuron,Neutral,Erie,Susquehannock, andShawnee, and became dominant in the region and enlarged their territory.
King Philip's War, also calledMetacom's War or Metacom's Rebellion, was an armed conflict between Native American inhabitants of present-day southernNew England and English colonists and their Native American allies from 1675 to 1676. It continued in northern New England (primarily on the Maine frontier) even after King Philip was killed, until atreaty was signed atCasco Bay in April 1678.[citation needed] According to a combined estimate of loss of life in Schultz and Tougias'King Philip's War, The History and Legacy of America's Forgotten Conflict (based on sources from the Department of Defense, the Bureau of Census, and the work of Colonial historian Francis Jennings), 800 out of 52,000 English colonists ofNew England (1 out of every 65) and 3,000 out of 20,000 natives (3 out of every 20) lost their lives due to the war, which makes it proportionately one of the bloodiest and costliest in the history of America.[citation needed] More than half of New England's 90 towns were assaulted by Native American warriors. One in ten soldiers on both sides were wounded or killed.[61]
The war is named after the main leader of the Native American side,Metacomet (also known as Metacom or Pometacom) who was known to the English as King Philip. He was the last Massasoit (Great Leader) of thePokanoket Tribe/Pokanoket Federation andWampanoag Nation. Upon their loss to the Colonists, many managed to flee to the North to continue their fight against the British (Massachusetts Bay Colony) by joining with the Abenaki Tribes and Wabanaki Federation.[citation needed]
Between 1754 and 1763, many Native American tribes were involved in theFrench and Indian War/Seven Years' War. Those involved in thefur trade in the northern areas tended to ally with French forces against British colonial militias. Native Americans fought on both sides of the conflict. The greater number of tribes fought with the French in the hopes of checking British expansion. The British had made fewer allies, but it was joined by some tribes that wanted to prove assimilation and loyalty in support of treaties to preserve their territories. They were often disappointed when such treaties were later overturned. The tribes had their own purposes, using their alliances with the European powers to battle traditional Native enemies.

Native American culture began to have an influence on European thought in this period. Some Europeans considered Native American societies to be representative of a golden age known to them only in folk history.[62] The political theoristJean Jacques Rousseau wrote that the idea of freedom and democratic ideals was born in the Americas because "it was only in America" that Europeans from 1500 to 1776 knew of societies that were "truly free."[62]
Natural freedom is the only object of the policy of the [Native Americans]; with this freedom do nature and climate rule alone amongst them ... [Native Americans] maintain their freedom and find abundant nourishment... [and are] people who live without laws, without police, without religion.[62]
In the 20th century, some writers have credited theIroquois nations' political confederacy anddemocraticgovernment as being influences for the development of theArticles of Confederation and theUnited States Constitution.[63][64] In October 1988, the U.S. Congress passed Concurrent Resolution 331 to recognize the influence of the Iroquois Constitution upon the U.S. Constitution and Bill of Rights.[65]
However, leading historians of the period note that historic evidence is lacking to support such an interpretation.Gordon Wood wrote, "The English colonists did not need the Indians to tell them about federalism or self-government. The New England Confederation was organized as early as 1643."[66] The historianJack Rakove, a specialist in early American history, in 2005 noted that the voluminous documentation of the Constitutional proceedings "contain no significant reference to Iroquois."[66] Secondly, he notes: "All the key political concepts that were the stuff of American political discourse before the Revolution and after, had obvious European antecedents and referents: bicameralism, separation of powers, confederations, and the like."[66]
American Indians have played a central role in shaping the history of the nation, and they are deeply woven into the social fabric of much of American life.... During the last three decades of the 20th century, scholars of ethnohistory, of the "new Indian history," and of Native American studies forcefully demonstrated that to understand American history and the American experience, one must include American Indians.
— Robbie Ethridge,Creek Country.[67]

During theAmerican Revolutionary War, the newly proclaimedUnited States competed with the British for the allegiance of Native American nations east of theMississippi River. Most Native Americans who joined the struggle sided with the British, based both on their trading relationships and hopes that the Americans' defeat would result in a halt to further white expansion onto Native American land. Many native communities were divided over which side to support in the war and others wanted to remain neutral. Seeking out treaties with the Indigenous inhabitants soon became a very pressing matter. It was during the American Revolutionary War that the newly forming United States signed its first treaty as a nation with the Indigenous inhabitants. In a bid to gain ground near the British stronghold of Detroit, the Continental Congress reached out to theLeni Lenape, also known as the Delawares, to form an alliance. Understanding a treaty would be the best way to secure this alliance, in 1778 TheTreaty with The Delawares was signed by representatives from the Congress and the Lenape.[68] For theIroquois Confederacy, based in New York, the American Revolutionary War resulted incivil war. The only Iroquois tribes to ally with the Americans were the Oneida and Tuscarora.[citation needed]
Frontier warfare during the American Revolutionary War was particularly brutal, with noncombatants suffering greatly. Both sides committed numerous atrocities and destroyed villages and food supplies to reduce the ability of people to fight, as in frequent raids in theMohawk Valley and central New York. The largest of these expeditions was theSullivan Expedition of 1779, in which American troops destroyed more than 40 Iroquois villages in order to neutralize Iroquois raids. The expedition failed to have the desired effect: Native American activity became even more determined.[69]

The British made peace with the United States in theTreaty of Paris. Native Americans were not a party to the treaty. The British ceded vast Native American territories to the United States without consulting or even informing the Native Americans. Within the Peace Treaty of Paris of 1783, no mention of Indigenous peoples or their rights were made.[70] The United States initially treated the Native Americans who had fought as allies with the British as a conquered peoples who had lost their lands. Although most members of the Iroquois tribes went to Canada with the Loyalists, others tried to stay in New York and western territories to maintain their lands. The state of New York made a separate treaty with Iroquois nations and put up for sale 5,000,000 acres (20,000 km2) of land that had previously been their territories. The state established small reservations in western New York for the remnant peoples.
The Indians presented a reverse image of European civilization, which helped America establish a national identity that was neither savage nor civilized.
— Charles Sanford,The Quest for Paradise: Europe and the American Moral Imagination[71]
The United States was eager to expand, to develop farming and settlements in new areas, and to satisfy land hunger of settlers from New England and new immigrants. The belief and inaccurate presumption was that the land was not settled and existed in a state of nature and therefore was free to be settled by citizens of the newly formed United States.[72] In the years after the American Revolution, the newly formed nation set about acquiring lands in the Northwest Territory through a multitude oftreaties with Native nations. The coercive tactics used to obtain these treaties often left the Native Nations with the option to sell the land or face war.[58] The states and settlers were frequently at odds with this policy.[73] Congress passed the Northwest Ordinance in 1787, which was conceived to allow for the United States to sell lands inhabited by the Native nations to settlers willing to move into that area.[60]

During this time, what came to be called TheNorthwest Indian War also began, led by the Native nations of the Ohio country trying to repulse American settlers and halt the seizure of land by the Continental Congress. Leaders such as Little Turtle and Blue Jacket lead the allied tribes of the Miamis and Shawnees,[75] who were among the tribes that had been disregarded during the signing of the Peace Treaty of Paris.[76]
European nations sent Native Americans (sometimes against their will) to the Old World as objects of curiosity. They often entertained royalty and were sometimes prey to commercial purposes.Christianization of Native Americans was a charted purpose for some European colonies.
Whereas it hath at this time become peculiarly necessary to warn the citizens of the United States against a violation of the treaties.... I do by these presents require, all officers of the United States, as well civil as military, and all other citizens and inhabitants thereof, to govern themselves according to the treaties and act aforesaid, as they will answer the contrary at their peril.
— George Washington, Proclamation Regarding Treaties, 1790.[77]
United States policy toward Native Americans had continued to evolve after the American Revolution.George Washington andHenry Knox believed that Native Americans were equals but that their society was inferior. Washington formulated a policy to encourage the "civilizing" process.[78] Washington had a six-point plan for civilization which included:
Robert Remini, a historian, wrote that "once the Indians adopted the practice of private property, built homes, farmed, educated their children, and embraced Christianity, these Native Americans would win acceptance from white Americans."[80] The United States appointed agents, likeBenjamin Hawkins, to live among the Native Americans and to teach them how to live like whites.[81]
How different would be the sensation of a philosophic mind to reflect that instead of exterminating a part of the human race by our modes of population that we had persevered through all difficulties and at last had imparted our Knowledge of cultivating and the arts, to the Aboriginals of the Country by which the source of future life and happiness had been preserved and extended. But it has been conceived to be impracticable to civilize the Indians of North America — This opinion is probably more convenient than just.
— Henry Knox to George Washington, 1790s.[74]

In the late 18th century, reformers starting with Washington and Knox,[82] supported educating native children and adults, in efforts to "civilize" or otherwise assimilate Native Americans to the larger society (as opposed to relegating them toreservations). TheCivilization Fund Act of 1819 promoted this civilization policy by providing funding to societies (mostly religious) who worked on Native American improvement.
I rejoice, brothers, to hear you propose to become cultivators of the earth for the maintenance of your families. Be assured you will support them better and with less labor, by raising stock and bread, and by spinning and weaving clothes, than by hunting. A little land cultivated, and a little labor, will procure more provisions than the most successful hunt; and a woman will clothe more by spinning and weaving, than a man by hunting. Compared with you, we are but as of yesterday in this land. Yet see how much more we have multiplied by industry, and the exercise of that reason which you possess in common with us. Follow then our example, brethren, and we will aid you with great pleasure...
— President Thomas Jefferson, Brothers of the Choctaw Nation, December 17, 1803[83]
The end of the 18th century also saw the revival of spirituality among the Iroquois society and other nations of the eastern seaboard. After years of war and uncertainty, despair and demoralization led some within these communities to turn to alcohol.[58] In 1799, the Seneca warriorHandsome Lake, who suffered from depression and alcoholism himself, received a spiritual vision.[84] This vision led Handsome Lake to travel among the Seneca as a religious prophet. He preached about a revival of the traditional ceremonies of theHaudenosaunee nations and a renouncement of drinking.[84] This movement, which also carried some elements of Christianity, came to be known as Gaiwiio, or Good Word.[85]

As American expansion continued, Native Americans resisted settlers' encroachment in several regions of the new nation (and in unorganized territories), from the Northwest to the Southeast, and then in the West, as settlers encountered the tribes of theGreat Plains.
East of the Mississippi River, an intertribal army led byTecumseh, a Shawnee chief and noted orator,[84] fought a number of engagements in the Northwest during the period 1811–12, known asTecumseh's War. In the latter stages, Tecumseh's group allied with the British forces in theWar of 1812 and was instrumental in the conquest ofDetroit. Conflicts in the Southeast include theCreek War andSeminole Wars, both before and after theIndian Removals of most members of theFive Civilized Tribes beginning in the 1830s under PresidentAndrew Jackson's policies.
Native American nations on the plains in the west engaged in armed conflicts with the United States throughout the 19th century, through what were called generally "Indian Wars." TheBattle of Little Bighorn (1876) was one of the greatest Native American victories. Defeats included theSioux Uprising of 1862,[87] theSand Creek Massacre (1864) andWounded Knee in 1890.[88]Indian Wars continued into the early 20th century.
According to the U.S. Bureau of the Census (1894),
"The Indian wars under the government of the United States have been more than 40 in number. They have cost the lives of about 19,000 white men, women and children, including those killed in individual combats, and the lives of about 30,000 Indians. The actual number of killed and wounded Indians must be very much higher than the given... Fifty percent additional would be a safe estimate..."[89]


In July 1845, the New York newspaper editor John L. O’Sullivan coined the phrase, "Manifest Destiny," as the "design of Providence" supporting the territorial expansion of the United States.[90]Manifest Destiny had serious consequences for Native Americans, since continental expansion for the United States took place at the cost of their occupied land. Manifest Destiny was a justification for expansion and westward movement, or, in some interpretations, an ideology or doctrine that helped to promote the progress of civilization. Advocates of Manifest Destiny believed that expansion was not only good, but that it was obvious and certain. The term was first used primarily byJacksonian Democrats in the 1840s to promote the annexation of much of what is now theWestern United States (theOregon Territory, theTexas Annexation, and theMexican Cession).
What a prodigious growth this English race, especially the American branch of it, is having! How soon will it subdue and occupy all the wild parts of this continent and of the islands adjacent. No prophecy, however seemingly extravagant, as to future achievements in this way [is] likely to equal the reality.
— Rutherford Birchard Hayes, U.S. President, January 1, 1857, Personal Diary.[91]
In 1851, delegates from the federal government and upwards of ten thousand Indigenous peoples, consisting of various Plains tribes including the Sioux, Cheyenne and Crow among many others, assembled. They gathered for the purpose of signing theTreaty of Fort Laramie which would set the definitive boundaries of the tribal territories, and tribes were to agree to leave travelers through the territory unharmed.[92] In 1853 members of the tribes from the southern Plains such as the Comanches, Kiowas, and Kiowa Apaches signed treaties similar to the Fort Laramie Treaty of 1851.[92]
In the years following the 1851 treaty, tracks were laid for the Union Pacific Railroad and gold was discovered in Montana and Colorado.[93] These factors amongst others led to increased traffic through tribal land which in turn disrupted the game animals that were necessary for the Plains’ nations survival.[58] Conflicts between the U.S. Army, settlers and Native Americans continued; however, in 1864 after the massacre of a Cheyenne village along the banks of Sand Cheek, war between the U.S. and the tribes of the Great Plains was inevitable.[94]

After a decade of wars between the U.S. and the tribes of the Great Plains, includingRed Cloud's War in 1866, the federal government again called for a treaty. In 1868 thePeace Treaty of Fort Laramie was signed, with one of the terms of the treaty being that the Sioux would settle on the Black hills Reservation in Dakota Territory.[58]
In 1874, gold was discovered within the Black Hills, land which is to this day most sacred to the Sioux. The Black Hills were at this time also the center of the Sioux Nation, the federal government offered six million dollars for the land, but Sioux leaders refused to sell. (In the Hands) By 1877 the Black Hills were confiscated, and the land that had once been the Sioux Nation was further divided into six smaller reservations.[95]
The age ofmanifest destiny, which came to be associated with extinguishing American Indian territorial claims and moving them to reservations, gained ground as the United States population explored and settled west of the Mississippi River. Although Indian Removal from the Southeast had been proposed by some as a humanitarian measure to ensure their survival away from Americans, conflicts of the 19th century led some European-Americans to regard the natives as "savages".
The period of theGold Rush was marked by theCalifornia genocide. Under U.S. sovereignty, the indigenous population plunged from approximately 150,000 in 1848 to 30,000 in 1870 and reached its nadir of 16,000 in 1900. Thousands of California Native Americans, including women and children, are documented to have been killed by non-Native Americans in this period. The dispossession and murder of California Native Americans was aided by institutions of the state of California, which encouraged Indigenous peoples to be killed with impunity.[96][97]

Many Native Americans served in the military during theCivil War, on both sides.[99] By fighting with the whites, Native Americans hoped to gain favor with the prevailing government by supporting the war effort.[99][100]

GeneralEly S. Parker, a member of theSeneca tribe, transcribed the terms of the articles of surrender which GeneralRobert E. Lee signed atAppomattox Court House on April 9, 1865. Gen. Parker, who served as Gen. Ulysses S. Grant's military secretary and was a trained attorney, was once rejected for Union military service because of his race. At Appomattox, Lee is said to have remarked to Parker, "I am glad to see one real American here," to which Parker replied, "We are all Americans."[99] GeneralStand Watie, a leader of theCherokee Nation and ConfederateIndian cavalry commander, was the last Confederate General to surrender his troops.[101]
In the 19th century, the incessantwestward expansion of the United States incrementally compelled large numbers of Native Americans to resettle further west, often by force, almost always reluctantly. Native Americans believed this forced relocation illegal, given theHopewell Treaty of 1785. Under PresidentAndrew Jackson,United States Congress passed theIndian Removal Act of 1830, which authorized the President to conduct treaties to exchange Native American land east of theMississippi River for lands west of the river.
As many as 100,000 Native Americans relocated to the West as a result of thisIndian Removal policy. In theory, relocation was supposed to be voluntary and many Native Americans did remain in the East. In practice, great pressure was put on Native American leaders to sign removal treaties.
The most egregious violation of the stated intention of the removal policy took place under theTreaty of New Echota, which was signed by a dissident faction ofCherokees but not the principal chief. The following year, the Cherokee conceded to removal, but Georgia included their land in a lottery for European-American settlement before that. President Jackson used the military to gather and transport the Cherokee to the west, whose timing and lack of adequate supplies led to the deaths of an estimated 4,000 Cherokees on theTrail of Tears. About 17,000 Cherokees, along with approximately 2,000 enslaved blacks held by Cherokees, were taken by force migration to Indian Territory.[102]
Tribes were generally located to reservations where they could more easily be separated from traditional life and pushed into European-American society. Some southern states additionally enacted laws in the 19th century forbidding non-Native American settlement on Native American lands, with the intention to prevent sympathetic white missionaries from aiding the scattered Native American resistance.[103]
In 1817, the Cherokee became the first Native Americans recognized as U.S. citizens. Under Article 8 of the 1817 Cherokee treaty, "Upwards of 300 Cherokees (Heads of Families) in the honest simplicity of their souls, made an election to become American citizens."[104][105] The next earliest recorded date of Native Americans' becoming U.S. citizens was in 1831, when some MississippiChoctaw became citizens after the United States Congress ratified theTreaty of Dancing Rabbit Creek.[106][107][108][109]
Article 22 sought to put a Choctaw representative in the U.S. House of Representatives.[106] Under article XIV of that treaty, any Choctaw who elected not to move with the Choctaw Nation could become an American citizen when he registered and if he stayed on designated lands for five years after treaty ratification. Through the years, Native Americans became U.S. citizens by:
1. Treaty provision (as with the Cherokee)
2. Registration and land allotment under theDawes Act of February 8, 1887
3. Issuance of Patent inFee simple
4. Adopting Habits of Civilized Life
5. Minor Children
6. Citizenship by Birth
7. Becoming Soldiers and Sailors in the U.S. Armed Forces
8. Marriage to a U.S. citizen
9. Special Act of Congress.
In 1857, Chief JusticeRoger B. Taney expressed the opinion of the court that since Native Americans were "free and independent people," they could become U.S. citizens.[110][111] Taney asserted that Native Americans could be naturalized and join the "political community" of the United States.[111]
[Native Americans], without doubt, like the subjects of any other foreign Government, be naturalized by the authority of Congress, and become citizens of a State, and of the United States; and if an individual should leave his nation or tribe, and take up his abode among the white population, he would be entitled to all the rights and privileges which would belong to an emigrant from any other foreign people.
— Chief Justice Roger B. Taney, 1857,What was Taney thinking? American Indian Citizenship in the era of Dred Scott, Frederick E. Hoxie, April 2007.[111]
After the American Civil War, theCivil Rights Act of 1866 states, "that all persons born in the United States, and not subject to any foreign power, excluding Indians not taxed, are hereby declared to be citizens of the United States".[112] This was affirmed by the ratification of theFourteenth Amendment. But the concept of Native Americans as U.S. citizens fell out of favor among politicians at the time. SenatorJacob Howard of Michigan commented, “I am not yet prepared to pass a sweeping act of naturalization by which all the Indian savages, wild or tame, belonging to a tribal relation, are to become my fellow-citizens and go to the polls and vote with me". (Congressional Globe, 1866, 2895)[113] In a Senate floor debate regarding the Fourteenth Amendment,James Rood Doolittle of Wisconsin stated, " ... all those wild Indians to be citizens of the United States, the Great Republic of the world, whose citizenship should be a title as proud as that of king, and whose danger is that you may degrade that citizenship (Congressional Globe, 1866, 2892)."[113]
In 1871 Congress added arider to theIndian Appropriations Act ending United States recognition of additional Native American tribes or independent nations, and prohibiting additional treaties.
That hereafter no Indian nation or tribe within the territory of the United States shall be acknowledged or recognized as an independent nation, tribe, or power with whom the United States may contract by treaty: Provided, further, that nothing herein contained shall be construed to invalidate or impair the obligation of any treaty heretofore lawfully made and ratified with any such Indian nation or tribe.
— Indian Appropriations Act of 1871[114]
After the Indian wars in the late 19th century, the United States establishedNative American boarding schools, initially run primarily by or affiliated with Christian missionaries.[115] At this time American society thought that Native American children needed to be acculturated to the general society. Theboarding school experience often proved traumatic to Native American children, who were forbidden to speak theirnative languages, taughtChristianity and denied the right to practice their native religions, and in numerous other ways forced to abandon their Native American identities[116] and adopt European-American culture.
Since the late 20th century, investigations have documented cases of sexual, physical and mental abuse occurring at such schools.[117][118] While problems were documented as early as the 1920s, some of the schools continued into the 1960s. Since the rise ofself-determination for Native Americans, they have generally emphasized education of their children at schools near where they live. In addition, many federally recognized tribes have taken over operations of such schools and added programs of language retention and revival to strengthen their cultures. Beginning in the 1970s, tribes have also foundedcolleges at their reservations, controlled and operated by Native Americans, to educate their young for jobs as well as to pass on their cultures.

On August 29, 1911Ishi, generally considered to have been the last Native American to live most of his life without contact withEuropean American culture, was discovered nearOroville, California after a forest fire drove him from nearby mountains. He was the last of his tribe, the rest having been massacred by a party of White "Indian fighters" in 1865 when he was a boy. After being jailed in protective custody, Ishi was released to anthropologists led byAlfred L. Kroeber at the University of California. They studied his Southern Yahi language and culture, and provided him a home until his death from tuberculosis five years later.[119][120][121]
On June 2, 1924, U.S.Republican PresidentCalvin Coolidge signed theIndian Citizenship Act, which made citizens of the United States of all Native Americans born in the United States and its territories and who were not already citizens. Prior to passage of the act, nearly two-thirds of Native Americans were already U.S. citizens.[122]
American Indians today have all the rights guaranteed in theU.S. Constitution, can vote in elections, and run for political office. There has been controversy over how much the federal government has jurisdiction over tribal affairs, sovereignty, and cultural practices.[123]
Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That all noncitizen Native Americans born within the territorial limits of the United States be, and they are hereby, declared to be citizens of the United States: Provided, That the granting of such citizenship shall not in any manner impair or otherwise affect the right of any Native American to tribal or other property.
— Indian Citizenship Act of 1924
Some 44,000 Native Americans served in theUnited States military duringWorld War II: at the time, one-third of all able-bodied Indian men from 18 to 50 years of age.[124] The entry of young men into the United States military during World War II has been described as the first large-scale exodus of Indigenous peoples from thereservations. It involved more people than any migration since theremovals from areas east of the Mississippi River of the early 19th century.
The men's service with the U.S. military in the international conflict was a turning point in Native American history. The overwhelming majority of Native Americans welcomed the opportunity to serve; they had a voluntary enlistment rate that was 40% higher than those who were drafted. War Department officials said that if the entire population had enlisted in the same proportion as the Native Americans, the response would have rendered the draft unnecessary.[125]
Their fellow soldiers often held them in high esteem, in part since the legend of the tough Native American warrior had become a part of the fabric of American historical legend. White servicemen sometimes showed a lighthearted respect toward Native American comrades by calling them "chief". Native American cultures were profoundly changed after their young men returned home, because of their wide contact with the world outside of the reservation system. "The war", said the U.S. Indian Commissioner in 1945, "caused the greatest disruption of Native life since the beginning of the reservation era", affecting the habits, views, and economic well-being of tribal members.[126]
The most significant of these changes was the opportunity—as a result of wartime labor shortages—to find well-paying work in cities. After the war many Native Americans relocated to urban areas, particularly on the West Coast with the buildup of the defense industry. In the 1950s the federal government had a relocation policy encouraging them to do so because of economic opportunity in cities. But Native Americans struggled with discrimination and the great cultural changes in leaving their reservations behind.
There were also losses as a result of the war. For instance, a total of 1,200 Pueblo men served in World War II; only about half came home alive. In addition many moreNavajo served asCode talkers for the military in the Pacific. The code they made, althoughcryptologically very simple, was never cracked by the Japanese.
Military service and urban residency contributed to the rise of American Indian activism, particularly after the 1960s and theoccupation of Alcatraz Island (1969–1971) by a student Indian group fromSan Francisco. In the same period, theAmerican Indian Movement (AIM) was founded inMinneapolis, and chapters were established throughout the country, where American Indians combined spiritual and political activism. Political protests gained national media attention and the sympathy of the American public.
Through the mid-1970s, conflicts between governments and Native Americans occasionally erupted into violence. A notable late 20th-century event was theWounded Knee incident on thePine Ridge Indian Reservation. Upset with tribal government and the failures of the federal government to enforce treaty rights, about 300 Oglala Lakota andAmerican Indian Movement (AIM) activists took control ofWounded Knee on February 27, 1973.[127]
Indian activists from around the country joined them at Pine Ridge, and the occupation became a symbol of rising American Indian identity and power. Federal law enforcement officials and the national guard cordoned off the town, and the two sides had a standoff for 71 days. During much gunfire, oneUnited States Marshal was wounded and paralyzed. In late April a Cherokee and local Lakota man were killed by gunfire; the Lakota elders ended the occupation to ensure no more lives were lost.[127]
In June 1975, two FBI agents seeking to make an armed robbery arrest at Pine Ridge Reservation were wounded in a firefight, and killed at close range. The AIM activistLeonard Peltier was sentenced in 1976 to two consecutive terms of life in prison in the FBI deaths.[128]
In 1968, the government enacted theIndian Civil Rights Act. This gave tribal members most of the protections against abuses by tribal governments that the Bill of Rights accords to all U.S. citizens with respect to the federal government.[129] In 1975 the U.S. government passed theIndian Self-Determination and Education Assistance Act, marking the culmination of 15 years of policy changes. It resulted from American Indian activism, the Civil Rights Movement, and community development aspects of PresidentLyndon Johnson's social programs of the 1960s. The Act recognized the right and need of Native Americans for self-determination. It marked the U.S. government's turn away from the 1950s policy of termination of the relationship between tribes and the government. The U.S. government encouraged Native Americans' efforts at self-government and determining their futures. Tribes have developed organizations to administer their own social, welfare and housing programs, for instance. Tribal self-determination has created tension with respect to the federal government's historic trust obligation to care for Indians, but the Bureau of Indian Affairs has never lived up to that responsibility.[130]
By this time, tribes had already started to establish community schools to replace the BIA boarding schools. Led by theNavajo Nation in 1968, tribes startedtribal colleges and universities, to build their own models of education on reservations, preserve and revive their cultures, and develop educated workforces. In 1994 the U.S. Congress passed legislation recognizing the tribal colleges asland-grant colleges, which provided opportunities for funding. Thirty-two tribal colleges in the United States belong to theAmerican Indian Higher Education Consortium. By the early 21st century, tribal nations had also established numerous language revival programs in their schools.
In addition, Native American activism has led major universities across the country to establishNative American studies programs and departments, increasing awareness of the strengths of Indian cultures, providing opportunities for academics, and deepening research on history and cultures in the United States. Native Americans have entered academia; journalism and media; politics at local, state and federal levels; and public service, for instance, influencing medical research and policy to identify issues related to American Indians.
In 1981,Tim Giago founded theLakota Times, an independent Native American newspaper, located at the Pine Ridge Reservation but not controlled by tribal government. He later founded theNative American Journalists Association. Other independent newspapers and media corporations have been developed, so that Native American journalists are contributing perspective on their own affairs and other policies and events.
In 2004, SenatorSam Brownback (Republican ofKansas) introduced a joint resolution (Senate Joint Resolution 37) to "offer an apology to all Native Peoples on behalf of the United States" for past "ill-conceived policies" by the U.S. government regarding Indian Tribes.[131] PresidentBarack Obama signed the historic apology into law in 2009, as Section 8113 of the 2010 defense appropriations bill.[132]
After years of investigation and independent work by Native American journalists, in 2003 the U.S. government indicted suspects in the December 1975 murder ofAnna Mae Aquash at the Pine Ridge Indian Reservation. AMi'kmaq, Aquash was the highest-ranking woman activist in theAmerican Indian Movement (AIM) at the time. She was killed several months after twoFBI agents had been killed at the reservation. Many Lakota believe that she was killed by AIM on suspicion of having been an FBI informant, but she never worked for the FBI.[133]Arlo Looking Cloud was convicted in federal court in 2004. In 2007 the United Statesextradited AIM activistJohn Graham from Canada to stand trial for her murder.[134] He was also convicted and sentenced to life.
TheIndian Arts and Crafts Act of 1990 (P.L. 101–644) is a truth-in-advertising law that prohibits misrepresentation in marketing ofAmerican Indian orAlaska Native arts and crafts products within the United States, includingdreamcatchers. It is illegal to offer or display for sale, or sell any art or craft product in a manner that falsely suggests it is Indian produced.
Native American tribes and individuals began to file suits against the federal government over a range of issues, especially land claims and mismanagement of trust lands and fees. A number of longstanding cases were finally settled by the administration of PresidentBarack Obama, who made a commitment to improve relations between the federal government and the tribes. Among these wasCobell v. Salazar, a class action suit settled in 2009, with Congress appropriating funds in 2010.[135] Another wasKeepseagle v., settled in April 2011. The $760 million settlement "designated $680 million for Native American farmers who had faced discrimination from theU.S. Department of Agriculture over a period of several years in the past.[136]
By 2012, "the Justice and Interior departments had reached settlements totaling more than $1 billion with 41 tribes for claims of mismanagement."[135] The Navajo Nation gained the largest settlement with a single tribe, of $554 million.[135] It is the largest tribe in the United States.
In 2013, under renewal of theViolence Against Women Act, the federal government strengthened protection of Native American women, as it established authority for tribes to prosecute non-Natives who commit crimes on Indian land.[135] Domestic and sexual abuse of Native American women has been a problem in many areas, but previous laws prevented arrest or prosecution by tribal police or courts of non-native abusive partners.[137][138]
Native American migration to urban areas continued to grow: 70% of Native Americans lived in urban areas in 2012, up from 45% in 1970, and 8% in 1940. Urban areas with significant Native American populations includeRapid City,Minneapolis,Oklahoma City,Denver,Phoenix,Tucson,Seattle,Chicago,Houston, andNew York City. Many have lived in poverty and struggled with discrimination. Racism, unemployment, drugs and gangs were common problems which Indian social service organizations, such as the Little Earth housing complex in Minneapolis, have attempted to address.[139]
As of the2020 census, the largest self-identified Native American group not combined with another race isAztec, numbering 378,122 individuals. Though Aztecs are indigenous toMexico and not the United States, they are nevertheless considered Native American people per census guidelines, which includes any Indigenous people from theAmericas.[140][141]
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