I think it’s d but I might be wrong
Answer:
he Blitzkrieg was so effective because it was "designed to create disorganization among enemy forces through the use of mobile forces and locally concentrated firepower" . This allowed the Germans to have the upper hand when attacking and often was the reason for their success.
Explanation:
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.
