US adults overall
US Adults who say they know "a lot" or "a little" about each event
Civil War and Emancipation
68
74
The Civil Rights Movement
68
75
The Underground Railroad
65
72
Atlantic Slave Trade
54
67
Jim Crow laws in the South
54
67
March on Washington (1963)
53
64
The Montgomery Bus Boycott
52
65
Brown v. Board of Education of Topeka
48
65
The Reconstruction
47
62
The origin of America's cotton industry
46
55
Great Migration
43
57
The Three-Fifths Compromise
38
63
Nat Turner's Revolt of 1831
32
52