How did the science of medicine change

World war i brought increased immigration to the united states from which country? germany france italy mexico

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.

Explain the strengths of the articles of confederation and how people reacted to this document. ! ^^^ 10 points