The main impact of the invention of the cotton gin in 1793 was on
a. the cost of cotton goods
b. cotton production in the upper south
c. the ability to process long-staple cotton
d. the ability to process short-staple cotton.

Which statement about african americans during the civil war is true? o a. they were granted the vote in the north. o b. they were allowed to attend northern universities. c. they were given deeds to southern plantations. o o d. they enlisted in the union army.