Only the ignorant public school educated dolts believe the war was fought over slavery. Not even Lincoln said it was.
How many quotes from southern leaders saying that they seceded to protect slavery do you want?
Or Hampden-Sidney College graduates.
"The South had always been solid for slavery and when the quarrel about it resulted in a conflict of arms, those who had approved the policy of disunion took the pro-slavery side. It was perfectly logical to fight for slavery, if it was right to own slaves." [John S. Mosby, Mosby's Memoirs, p. 20]
It wasn’t. It was fought over the Union.