Answer:By roughly 6000 to 8000 years ago, agriculture was well under way in several regions including Ancient Egypt, around the Nile River; the Indus Valley civilization; Mesopotamia, between the Tigris and Euphrates rivers; and Ancient China, along the Yellow and Yangtze rivers. This is because the regular river floods made for fertile soil around the banks and the rivers could also supply fresh water to irrigate crops. It’s no coincidence that as agriculture allowed for denser and denser populations along with more specialized societies, some of the world’s first civilizations developed in these areas as well.
