Question

What caused the democratic party to split along sectional lines in the election of 1860?

Answer 1

Answer: D) The split occurred because Northern Democrats and Southern Democrats disagreed over how to deal with the issue of slavery.

Explanation:

Many (not all) Northern Democrats were strong abolitionists in favor of getting rid of slavery altogether. The Democrats of the South wanted to keep slavery as much of the Southern economy relied on it. So choice A is slightly related to this, but choice D is the better answer.