Ancient Romans at one time used human urine as an ingredient in their toothpaste.
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No one knows who designed the first American Flag.
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Leonardo Da Vinci predicted the mass use of solar energy as long ago as 1447.
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Leonardo Da Vinci made a robotic lion in 1515 that would walk, sway, open its mouth and move its tail - it even had a compartment that opened to present flowers.
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To take an oath, ancient Romans put a hand on their testicles
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The Canadian province of New Brunswick (which was part of the UK at the time) had a bloodless war with the US state of Maine in 1839
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