Parthenon
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Taj Mahal
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Petra
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Machu Picchu
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Eiffel Tower
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Great Wall of China
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Saudi Arabia
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Iceland
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Texas Revolution
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2.9 |
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Chile
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U.S. Air Force
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3.0 |
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Costa Rica
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Netherlands
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Cambodia
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Immigration Through Ellis Island
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2.9 |
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Louisiana Purchase
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2.9 |
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Pakistan
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September 11th Attacks
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3.0 |
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Somalia
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Morocco
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Indonesia
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Turning Points in U.S. History (10 titles)
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Poland
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Denmark
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