2

• 20th century in the United States(12 C, 2 P)

A

• African-American history(2 C, 3 P)

C

• History of California(1 C, 2 P)
• Centuries in the United States(3 C)
• China–United States relations(2 C, 4 P)

D

• Decades in the United States(16 C)
• Disasters in the United States(1 C, 6 P)

F

• Foreign relations of the United States(7 C, 19 P)

H

• History of sports in the United States(2 C, 3 P)
• Human rights in the United States(3 C, 4 P)

M

• Mass shootings in the United States(1 C, 4 P)

N

• Native American history(1 C, 6 P)

P

• Presidents of the United States(7 C, 46 P)
• Protests in the United States(4 P)

T

• Terrorism in the United States(1 C, 11 P)

U

• United States case law(9 P)

• History of the United States

A

• American decline
• American imperialism
• American Negro Academy

C

• Gus Courts
• Cowboy

D

• Davyes-Pate Rebellion

F

• Foreign concessions in Tianjin
• Forty acres and a mule
• Founding Fathers of the United States
• Frontier myth

H

• History of Mexican Americans

J

• Jim Crow laws

K

• Korean Air Flight 801
• Ku Klux Klan

L

• Labor history of the United States

O

• Oregon trail

P

• Pilgrims (Plymouth Colony)
• Plymouth Colony

S

• Slavery in the United States

U

• United States territorial acquisitions

V

• Vietnam War

W

• War of 1812

Y

• Yeoman