Did living in a river valley allow mesopotamians to have fresh water, food supply, and fertile soil?

yes it did

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

. political or economical policy that isolates a country from participating in international relationships. it has been suggested that the united states participates in isolationism because of its lack of involvement in particular wars or alliances.

i think that it would be tenth of the first