INVention 

 It's unknown who first invented the toilet because it's something everyone had their own versions of, but here are some ancient variations of them. 

In 3,000 BC, Scotland had stone huts with drains extending from recesses in the walls.

In 1,700 B.C. the palace of Knossos on Crete featured definite latrines, large earthenware pans connected to a water supply that ran through terra-cotta pipes.

Even though the  ancient Romans had toilets, they sometimes would just throw their waste onto the streets. Another way the Romans disposed of their waste was by a system of sewers. They built a simple outhouse like object directly over the running waters of the sewers that poured into the Tiber River (Bells). 

 Medieval England  had a room where there was a tiny opening where royalty would do their business. It was usually over a moat and it collected all waste, making it uninviting for people to swim through.