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The Civil Rights Movement (1954-1969)
34
47
12
7
Civil War and Emancipation (1861-1865)
34
45
13
8
The Underground Railroad
32
46
14
8
March on Washington (1963)
25
41
19
15
Jim Crow laws in the South
25
40
17
18
The Montgomery Bus Boycott (1955 – 1956)
24
42
18
16
Brown v. Board of Education of Topeka (1952-1954)
22
35
20
23
Atlantic Slave Trade (1619-1808)
19
38
25
18
The Reconstruction (1863-1877)
17
37
23
23
The origin of America's cotton industry
17
40
26
17
The Three-Fifths Compromise
17
27
23
33
Nat Turner's Revolt of 1831
12
25
26
36
Great Migration (1916-1970)
12
33
30
25