Why did many white southerners consider slavery to be essential to their well-being?

Explanation:

The only way white southerners could produce & pick cotton to meet the needs of the consumer, was by owning slaves. The more slaves, the more cotton produced & picked. All the profits went to the slave owner who in turn; provided awful housing, food, and water,(this made the slave owner richer). Same is true regarding minimum wage, the harder one has to work for their paycheck, the more business owners make for themselves.

(d) rivers.

explanation:

civilizations developed around rivers because their waters provided places to hunt and fish. also, as the rivers flooded, the lands around them became fertile. this allowed them to support farming. this is especially true of the nile river, which flooded the same time each year.

answer; i believe that the correct answer is (chronological order);