The normally arid land around the Nile River became saturated with water and nutrient-rich, river-born soil called silt. What caused this to happen? A. The people in the Fertile Crescent were able to grow a variety of crops. B. The people in the Fertile Crescent built effective irrigation systems. C. The Nile River flooded due to the seasons. D. The Nile River dried out due to lack of rain.

The normally arid land around the Nile River became saturated with water and nutrient-rich, river-born soil called silt. What caused this to happen? A. The people in the Fertile Crescent were able to grow a variety of crops. B. The people in the Fertile Crescent built effective irrigation systems. C. The Nile River flooded due to the seasons. D. The Nile River dried out due to lack of rain.