>> "Among other things, they contain the world's earliest known system of flush toilets." [1] >> "With a number of courtyard houses having both a washing platf

>> "Among other things, they contain the world's earliest known system of flush toilets." [1] >> "With a number of courtyard houses having both a washing platform and a dedicated toilet / waste disposal hole. The toilet holes would be flushed by emptying a jar of water, drawn from the house's central well, through a clay brick pipe and into a shared brick drain" [1] Amazing. This was about the Indus Valley Civilization in 3300–1300 BCE. It's interesting to note that how much a civilization, like Rome after the collapse as shown in the below thread, can lose much of cultural or technical advances it made earlier. [1] https://en.wikipedia.org/wiki/Sanitation_of_the_Indus_Valley_Civilisation https://en.wikipedia.org/wiki/Sanitation_of_the_Indus_Valley...