Statue of Liberty
|
|
|
|
|
Golden Gate Bridge
|
|
|
|
|
Louisiana Purchase
|
|
2.9 |
|
|
Immigration Through Ellis Island
|
|
2.9 |
|
|
September 11th Attacks
|
|
3.0 |
|
|
Texas Revolution
|
|
2.9 |
|
|
Industrial Revolution
|
|
2.9 |
|
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California Gold Rush
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|
2.8 |
|
|
Civil Rights Movement
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|
3.0 |
|
|
Dust Bowl
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|
2.8 |
|
|
Great Depression
|
|
2.9 |
|
|
Women's Suffrage Movement
|
|
2.9 |
|
|
Lincoln Memorial
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|
1.0 |
|
|
Colonial Williamsburg
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|
1.0 |
|
|
Washington Monument
|
|
1.0 |
|
|
U.S. Capitol
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|
1.0 |
|
|
Martin Luther King, Jr. Memorial
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|
1.0 |
|
|
Golden Gate Bridge
|
|
1.0 |
|
|
Gateway Arch
|
|
1.1 |
|
|
Empire State Building
|
|
1.0 |
|
|
Liberty Bell
|
|
0.9 |
|
|
Mount Rushmore
|
|
1.0 |
|
|
Ellis Island
|
|
1.0 |
|
|
Alamo
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|
1.0 |
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|
