Answer:
The answer is B.
Step-by-step explanation:
The Euphrates and the Tigris, both of which originate in eastern Turkey and flow south to the Persian Gulf. The Tigris and Euphrates rivers provided water and a means of transportation for the people who settled in the area. In ancient times, it was easier to travel by boat than over land. As the water spread over the floodplain, the soil it carried settled on the land. Mesopotamia is an ancient, historical region that is between the Tigris and Euphrates rivers in modern day Iraq and parts of Kuwait, Syria, Turkey and Iran.