Answer:
the Tigris and Euphrates rivers
Explanation:
Mesopotamia was a very fertile and good area located around and between the two rivers Tigris and Euphrates. The first civilization rose here and many developments and settlements were made. Many technological breakthroughs were made in this area and small towns developed. New agriculture and watering methods were implemented which led to population increase.
The United States following World War II had loaned a large amount of money to help rebuild post-war Europe.
Hope this was helpful.
