The Nile River was predictable and flooded yearly. This allowed the Egyptians to build early irrigation systems and save the flood water for growing season, when they needed it most. It was their water supply and allowed them to transition from hunting and gathering to an agricultural production system. However, there was drought for a period of time and the Nile didn't flood. This again shaped their society as the pharoah was weakened and they were able to be conquered by nomads.
Answer:
The Delian League is a voluntary association city-states. The Athenians used this to keep people in the city-state so they could build their empire so they have enough soldiers to fight in wars.
Explanation:
The Cotton Gin because cotton was being made at a faster pace, and the need for more cotton arose, which also called for the need for more slaves.
the answer is d,that's what i am studying now.
