How did the cotton gin lead to a rise in slavery? a. demand for cotton in the north declined. b. the slave trade was legal for farm work only. c. growing cotton required many workers. d. the cotton gin made growing cotton less profitable. (gradpoint)

Which statement best describes a significant cause of world war ii? o a. the economic boom that followed world war i allowed countries to build up huge militaries. o b. the treaty of versailles, which ended world war i, left lasting resentments in many countries. o c. the rise of imperial states in asia caused european powers to unite for their common defense. o d. the league of nations encouraged european states to form secret military alliances.