Multiple what are two important long-term strategies developed by the north to win the civil war? to wear down confederate forces on the field of battle to get support from england since it was anti-slavery as well to cut off the south by controlling the mississippi river to institute a blockade of southern ports to prevent trade

How did the invention of the cotton gin affect slave labor in the united states? a. there was a forced migration of slaves from the south to the north. b. slave-owning cotton planters were gradually forced to sell their plantations. c. more slaves were purchased to work on cotton plantations in the south. d. the reduced need for labor on cotton plantations led to a decline in slavery. e. slaves were moved from cotton plantations to sugar plantations.