Final answer:
The large river on the map of Agea is the Tigris River, which is crucial for Mesopotamia's agriculture and historical civilizations. Meanwhile, the Red Sea facilitated long-distance trade for Himyar and Aksum, and the Nile River provided predictability and stability for ancient Egyptian civilization.
Step-by-step explanation:
The name of the large river on the map of Agea is Tigris River. This river, along with the Euphrates River, defines Mesopotamia. The Tigris River flows south from the mountains of southeastern Turkey through Iraq and into the Persian Gulf, providing vital water resources for agriculture and the development of civilizations such as Babylonia. On the other hand, the body of water that allowed Himyar and Aksum to conduct long-distance sea trade is the Red Sea. The Nile River was the lifeblood of ancient Egypt, providing a predictable source of fertility and stability for their civilization.