Why is the Black Prairie region of Mississippi known for growing a variety of crops? It has fertile soil.
It has several large towns.
It has a diverse population.
It is the largest region in the state.

It has fertile soil.

Explanation:

Fertile soil is capable of supplying sufficient amounts and proportions of nutrients and water necessary for plant growth and reproduction. The rich soil of the region was suitable for cotton cultivation and large plantations developed in the area before the Civil War. Soybeans and cattle have turned cotton into a major crop in the Black Prairie. The cities of this region are the fastest growing economically in the state.

The american civil war

Dpolitical is the answer