What was the primary reason that people first migrated into the tigris and euphrates valleys?

The country in the world with the largest population is_?

Based on this map, which statement about africa’s economic activity is most accurate? a) coastal countries are all members of opec b) economic development is more common with opec nations c) coastal countries have more access to productive resources d) economic development is more common above the sahara desert

One of the main reasons the united states occupied japan after world war ii was that