Romans used a plant called Silphium as contraception. They had so much sex that they drove it into extinction.
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The exact cause of death and burial site of Genghis Khan is unknown, because all of the 2000 funeral guests and 800 soldiers were killed in order to preserve the secret.
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In real life, Pocahontas was 11 years old when she met John Smith - he was 28.
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The word 'mile' is derived from the Latin word for 1,000 - the number of paces it took the average Roman!
6
In 1537, England's King Henry VII officially declared February 14th the holiday of St. Valentine's Day.
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Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16