Why was the u. s. westward expansion a problem?

The treaty of paris in 1763 returned

How w.e.b. dubois wanted to improve the social and economic situation that existed for african americans during the early 19th century?

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.