Northern Elites: the South cannot be allowed to secede at any cost

Northern Plebs: Muh Slavery

Southern Elites: the north cannot be trusted to respect our independent state rights, so we must sever ties. Also, our Jewish elites want to perpetuate slavery and they make us a lot of money.

Southern Plebs: Muh Rights and Freedoms (also, halfway through the war the north decided to rape pillage and murder our civilian towns, so fuck them and I don't care why)

the civil war was a case of two sides fighting four different wars.