
Acolonial empire is astate engaging incolonization, possibly establishing or maintainingcolonies, infused with some form ofcoloniality andcolonialism. Such states can expand contiguous as well asoverseas. Colonial empires may set up colonies assettler colonies.[1]
Before the expansion of early modern European powers, otherempires had conquered and colonized territories, such as theRoman Empire in Europe, North Africa and Western Asia. Modern colonial empires first emerged with a race of exploration[2][better source needed]between the then most advancedEuropean maritime powers,Portugal andSpain, during the 15th century.[3][need quotation to verify] The initial impulse behind these dispersed maritime empires and those that followed wastrade, driven by the new ideas and thecapitalism that grew out of the EuropeanRenaissance. Agreements were also made to divide the world up between them in1479,1493, and1494. Europeanimperialism was born out of competition between European Christians andOttoman Muslims, the latter of which rose up quickly in the 14th century and forced the Spanish and Portuguese to seek new trade routes toIndia, and to a lesser extent, China.
Althoughcolonies existed inclassical antiquity, especially amongst thePhoenicians and theancient Greeks who settled many islands and coasts of theMediterranean Sea, these colonies were politically independent from thecity-states they originated from, and thus did not constitute a colonial empire.[4] This paradigm shifted by the time of thePtolemaic Empire, theSeleucid Empire, and theRoman Empire.
TheEuropean countries of themodern era that are most remembered as colonial empires are theUnited Kingdom,Spain,Portugal,Italy,Netherlands,France,Germany andBelgium.[5][6]
Portugal began establishing the first global trade network and one of the first colonialempires[7][8] under the leadership ofHenry the Navigator. The empire spread throughout a vast number of territories distributed across the globe (especially at one time in the 16th century) that are now parts of60 different sovereign states. Portugal would eventually controlBrazil, territories such as what is nowUruguay and some fishing ports in north, in theAmericas;Angola,Mozambique,Portuguese Guinea, andSão Tomé and Príncipe (among other territories and bases) in theNorth and theSubsaharanAfrica; cities, forts or territories in all theAsian subcontinents, asMuscat,Ormus andBahrain (amongst other bases) in thePersian Gulf;Goa,Bombay andDaman and Diu (amongst other coastal cities) inIndia;Portuguese Ceylon;Malacca, bases in Southeast Asia andOceania, asMakassar,Solor,Banda,Ambon and others in theMoluccas,Portuguese Timor; and the grantedentrepôt-base ofMacau and the entrepôt-enclave ofDejima (Nagasaki) inEast Asia, amongst other smaller or short-lived possessions.

During itsSiglo de Oro, theSpanish Empire had possession ofMexico,South America, thePhilippines, all ofsouthern Italy, astretch of territories from theDuchy of Milan to theNetherlands,Luxembourg, andBelgium, parts ofBurgundy, and many colonial settlements in the Americas, Africa, and Asia. Possessions in Europe, Africa, theAtlantic Ocean, the Americas, thePacific Ocean, and East Asia qualified the Spanish Empire as attaining a global presence. From 1580 to 1640 thePortuguese Empire and the Spanish Empire were conjoined in apersonal union of itsHabsburg monarchs during the period of theIberian Union, but beneath the highest level of government, their separate administrations were maintained.

Subsequent colonial empires included theEnglish,Dutch andFrench empires. Throughout the 19th and early 20th century, by virtue of its technological and maritime supremacy, theBritish Empire steadily expanded to become by far the largest empire in history; at its height ruling over a quarter of the Earth's land area and 24% of the population. Britain's role as a global hegemon during this time ushered in a century of "British Peace", lasting from the end of theFrench Revolutionary and Napoleonic Wars to the start ofWorld War I. During theNew Imperialism, Belgium, Italy and Germany also built theircolonial empires in Africa, whileJapan started to encroach into formerChinese domains after they have settled their ownreformation.
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The chart below[original research?] shows the span of some European colonial empires.


Other countries with informal colonial possessions:
Following Magellan, the exploration race intensified. Spain, Portugal, England and France eagerly sought to stake their claim on the riches of the New World and beyond.
{{cite book}}:|website= ignored (help)Arguing that the Ottoman Empire, like her contemporaries, was a colonial empire would lead to the analysis that the Armenian Genocide was a result of Ottoman colonialism and the racism intrinsic to it...