What important resource do rivers provide to civilizations?

me

A river gives the inhabitants a reliable source of water for drinking and agriculture. Benefits include fishing, fertile soil due to annual flooding, and ease of transportation. The first great civilizations, such as those in Egypt and Mesopotamia, all grew up in river valleys.

crops, farmland, fishing etc

Explanation:

rivers were Extremely important if you wanted a civilization to thrive, A river did not just only produce fresh water it also was used to grow crops and used to fish

the united states didn't wanted to get involve with other countries probelms

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).