In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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The average life span of a peasant during the medieval ages was 25 years.
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Traces of cocaine were found on 99% of UK bank notes in a survey in London in 2000.
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Cleopatra married two of her brothers.
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A baboon called Jackie became a private in the South African army in World War I.
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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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