Until the 1840s, the North and the South Were Similar

Multiple Choice

Until the 1840s, the North and the South were similar in which of the following ways?

A) Both regions tried to apply the states' rights doctrine against federal authority with nearly equal frequency.
B) Both regions had an equal commitment to industrialization.
C) Slavery was clearly profitable in both regions.
D) Both regions invested heavily in the building of canals and railroads.