American inventor Eli Whitney was granted a patent for a ground-breaking new type of cotton gin.
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Google employee Emma Haruka Iwao broke a world record by calculating Pi right down to 31.4 trillion digits!
President Warren G. Harding became the first president to pay taxes in the US.
Anne Miller became the first American patient to be treated with penicillin.
Finland became the world's happiest country.
Boston became the first American city to have a town meeting.
