B:American contributions to the columbian exchange
Egypt developed around the Nile River, while Mesopotamia developed between the Tigris and Euphrates rivers. ... Politically, both Egypt and Mesopotamia had a government with one main ruler, but Egypt had a centralized government with a pharaoh, while Mesopotamia had a decentralized government with a king.Oct 22, 2012
Answer:
Explanation:
Roosevelt supervised the mobilization of the U.S. economy to support the war effort, and implemented a Europe first strategy, making the defeat of Germany a priority over that of Japan.
