The answer is B) The Allies began their invasion of Nazi-occupied France
Agricultural communities settled where they did because there was a water source near by for growing crops. It is very hard to grow plants or raise animals without a water source. People also settled near water sources so they could travel on ships and trade with other communities along the same water source. The people in the community also needed water to stay hydrated and to wash dirty clothes or to bathe.
The 3 great empires were the Mughal, Ottoman, and the Safavid empire.