Was everyone just sick all the time? How did they keep everyone from dying?
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Primitive tribes most likely didn’t figure it out. It took us until [1854](https://en.m.wikipedia.org/wiki/1854_Broad_Street_cholera_outbreak) to figure out the connection between poop contaminated drinking water and a cholera outbreak. Prior to that, the most popular theory was that diseases were spread and caused by what they called miasma, or foul smelling air.
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