It had many causes, but there were two main issues that split the nation: first was the issue of slavery, and second was the balance of power in the federal government. The South was primarily an agrarian society.
They knew that Abraham would try to change the south from slaves. Furious with it 7 slave states secede from the UN to form the Confederates.One thing the both the north and the south hated were protective tariff put on goods to tax the people. -Both north and the south had different views on slavery.