Some of the most famous are:Nile Valley (Egypt), Tigris and Euphrates (Mesopotamia), Ganges River, China, Myans and Aztecs in southern Mexico, Incas in Peru.
The answer to that used to be easy: The Garden of Eden, which we assume to be in the area of Iraq between the Tigris and Euphrates Rivers. Then we thought from Richard Leakey's archeology in Africa...