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

It threatened to ruin the livelihood of many wealthy planters, because they relied on the labor of slaves to make a profit.


It pressured other states to make a decision on the secession question


Louisiana had unique economic ties to the North and the rest of the world, as well as a large foreign-born population.


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