There's a bar in Ireland (presently named Sean’s Bar) that was opened in 900AD.
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Approximately 40% of the U.S. paper currency in circulation was counterfeit by the end of the Civil War.
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Nazi leader Adolf Hitler had only one testicle.
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Clocks made before 1660 had only one hand - an hour hand.
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Pierre Jaquet-Droz, a watchmaker, 240 years ago invented a robot that could write, and the parts could be interchanged to say whatever you want.
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The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
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