U.S. elections used to be held over a 34-day window.

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Before carving pumpkins for Halloween, people used to carve turnips.

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The first contact lenses were made of glass.

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The first person in history whose name we know may have been an accountant.

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The Apollo 11 astronauts had to fill out a customs form for their lunar samples.

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Close-up of a high five

The first known high-five wasn’t until 1977.

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