Answer:
In former Mesopotamia, on ancient Nile River, in ancient Egypt, the Huang he and the Indus River are allegedly found in the Three River valleys of the Tigrian-Euphrates River, and in ancient India and China. There were many variations between these three river valley cultures and yet similar lifestyles. Although the cultures are in different continents, from academic to religious belief and trade structures, they share similar cultural, political and economic values.
Step-by-step explanation: