The correct answer to this open question is the following.
The geographic feature of Mesopotamia that led to the Sumerians being easily taken over was the Tigris and Euphrates Rivers that made it easy for their enemies to navigate and invade them.
Sumeria was the oldest civilization known to man. Sumerians settled in the middle of the Tigris and Euphrates Rivers in the Middle East region. There, they developed agriculture techniques and learn how to use the flood of the rivers to grow crops in that fertile soil. That is how they prosper for some time until their enemies could access their city-states navigating through both rivers.
D because the Greeks did believe the gods would determine their fate. They thought if they did something wrong or disobeyed the gods, the gods would punish them, and now days we have myths saying some of the things they would believe.
The Roman Empire split into Eastern and Western Rome so were easily destroyed by the Goths, Franks, Huns and Vandals.
