How did the annual flooding of the Nile River support agriculture in ancient Egypt?

The Egyptians grew their crops along the banks of the River Nile on the rich black soil, or kemet which was left behind after the yearly floods. The fertile soil was ideal to grow healthy crops. No farming was done at this time, as all the fields were flooded.

The flooding would wet down the soil and make it more fertile making the agriculture more rich and full of nutrients and also easier to grow and plow fields