Question

Which factor led to the development of the four river-valley civilizations of Mesopotamia, Egypt, the Indus Valley, and China? Select all correct answers. A. The worship of many nature gods B. The presence of rivers. C. The building of villages and cities. D. A surplus of food. E. The need to unite for protection from enemies.

Answer 1

Answer: B

Explanation: I took the test!

Answer 2

B.presence of rivers

Step-by-step explanation:

Because presence of river led to development of agriculture .