Mayans and the Incas I think
Probably for the same reasons we have bathrooms and indoor plumbing.
What is 'following'.
yuk... no indoor toilets, no running water, very unhygienic, I wouldn't like that world.
I was born Mar 31. 1929. In a small town in IL. We always had indoor plumbing. The Aztec's had indoor plumbing.
Running water and indoor plumbing are two things that citizens take for granted today. Water first started free flowing into homes in 1869.
It’s indoor plumbing
My home had water runing in 1856 one of the first to have indoor plumbing H and C
The ancient Egyptians had flush toilets. The ancient Romans had indoor plumbing.
About 2,000 years ago the Romans started using indoor plumbing.
yes they have it
Indoor Plumbing
Romans invented running copper water lines.