1500
Africans invented running water. Ancient Egyptians were the inventors.
No one invented running water, it is a natural phenomenon.
Never
The Romans.
Running is invented because a Two Thousand old man run when he was old...
Romans invented running copper water lines.
NZ
Technically, it wasn't invented. Running has been around ever since people. There really is no better reason to say that cross country was invented as distance running competition.
Who invented the water slide?
Natural water was not invented.
The Romans had running water, fool
Slope has always existed. The wind creates sand dunes or water waves which have slopes. Running water cuts valleys out of rock and these have slope. Tectonic movements create mountains which have slope.