The Nile is surrounded on four sides by natural barriers, which also protected the people who lived along the fertile riverbanks.
A delta is a triangle-shaped area of land made of soil, deposited by a river.
Because of the Nile, and the many gifts provided by the the Nile, the ancient Egyptians enjoyed a high standard of living and a relatively peacful time, compared to other ancient civilications. Gifts included water, transportation, trade, papyrus, fish and other animals, and rich black soil.
As the water receded, the farmers blocked the irrigation ditches to keep the water inside, water they used to help them grow crops in the rich black soil.
They invented a shaduf to help them lift water from the canals to the crops.
The Nile provided pastureland. Herdsman and shepherds pastured their animals in the marshes along the Nile. Beef, oxen, sheep, and goats provided meat, milk, hides and dung for cooking fuel.