Answer
Mesopotamia
Explanation
Mesopotamia is a region between the two rivers Tigris and Euphrates in western Asia. They depended on annual flooding to produce a constant surplus of food because the floods brought silt which was very fertile to the lands and it contained the minerals required by the soil and the nutrients which helps the plants to be more productive.
Also in Egypt floods along the river Nile helped farmers in good production of plants because it carried black soil to their farms which was very fertile.
1. The fishing industry
2. lived on farms.
I did some research and I found that I think the correct answer is D