How did the environment shape the development of civilization? Choose at least two River Valley Civilization

How did the environment shape the development of civilization? Choose at least two River Valley Civilizations (Mesopotamia, Egypt, India, and China) as examples. Include information from the primary sources (at least 2) as evidence.

Primary sources:
Hymn to the Nile
https://sourcebooks.fordham.edu/ancient/hymn-nile.asp

The code of Hammurabi
https://avalon.law.yale.edu/ancient/hamframe.asp

Please focus on how the rivers of each civilization contributed to their development.