This led to widespread cultivation of cotton in upland areas throughout the Deep South, and the forced migration of more than one million African-American slaves into the area through sales in the domestic slave market.
This led to widespread cultivation of cotton in upland areas throughout the Deep South, through an area that became known as the Black Belt. The increased demand for slave labor resulted in the forced migration of more than one million African-American slaves into the area through sales in the domestic slave market.