The Statue of Liberty is made out of copper. When originally built, it looked like a shiny new penny!
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Seven U.S. states are named after sovereigns - four kings and three queens.
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According to a 2014 study, 1 in 10 Americans think HTML is a sexually-transmitted disease.
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A typical full-time worker in the US with a four-year college degree earns about $50,000. This is 62% more than a worker with only a high-school diploma.
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During the Cold War, the US had planned to detonate a nuclear weapon on the moon.
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