Approximately 40% of the U.S. paper currency in circulation was counterfeit by the end of the Civil War.
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The World Trade Center towers used to have two zip codes, 10047-10048, one for each building.
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In 1980, the city of Detroit presented Saddam Hussein with a key to the city.
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During the Cold War, the US had planned to detonate a nuclear weapon on the moon.
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Everton FC used to be called St Domingo's FC!
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