What physical feature allowed settlers in the Fertile Crescent to grow crops?

sea tides
flooding rivers
natural canals
eroding mountains

1 answer

The physical feature that allowed settlers in the Fertile Crescent to grow crops was flooding rivers. The region is nourished by the Tigris and Euphrates rivers, which periodically flooded, depositing nutrient-rich silt onto the land, making it highly fertile and suitable for agriculture.