The results of the Mexican War.
AIn the late 1840s, what led to the question of whether slavery should expand to the territories?
BHow did the cotton gin change agriculture in the South?
CHow did the civil war affect industries in the north?
DWhat was the basis of the South's economy after the Civil War?
AIn the late 1840s, what led to the question of whether slavery should expand to the territories?
BHow did the cotton gin change agriculture in the South?
CHow did the civil war affect industries in the north?
DWhat was the basis of the South's economy after the Civil War?