What unique features of each river valley civilization were influenced by specific features of the natural environment? What common features do these civilizations share, and how do these features relate to the environment?

Question

What will be an ideal response?

Answer 1

Answers will vary but correct responses should include: The four river valleys shared environmental features: a gradually warming and drying climate; relatively dry soils; and a reliance on seasonally flooding rivers and, therefore, on irrigation. If we consider them together, however, we can see how relentless divergence opened cultural chasms inside this common ecological framework.