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Chinese invent toilet paper.
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Paper was produced in 2ft sheets.
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First flush toilet was invented, but was ridiculed by contemporaries, so he never made another. It is believed that the term "john" came from Harrington.
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Alexander Cummings was granted the first patent for a flush toilet and was known as the father of the modern day toilet.
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This was invented at least before 2012, but it is considered to aid in healthier bathroom practices. Created by Bill, Judy, and Bobby Edwards.