Just to get to the meat of this, isn't slavery an economic system? Isn't the slave based agrarian system the economy that the South was fighting for? 50 years before air conditioning made industrial growth possible in the south?
A good question.
In a manner of speaking, sure, slaves are an economic aspect of parts of the South. Slaves did work, albeit not really for free- like a socialist utopia they didn't work for money, but instead food and shelter. But it was not a real issue of the Civil War... at least not until a good measure after the war started and Lincoln was locking up journalist and facing riots at home.
The main reason the South wanted to succeed was because of two major connected events. First the industrial companies that made important farm equipment, namely the Cotton Gin, raised the price for the machines drastically after Lincoln was elected. The South then started buying imported Gins from overseas to which (second) Lincoln, beholden to said industries for their money ran his campaign, created tariffs on said imports forcing the Souths hands to 'Buy North or not at all'. Because of this strangle hold they opted to Secede.
It annoys me that history of the Civil War taught today is "Lincoln is so great, he freed the slaves" when, if you look deeper- Lincoln was an asshole white supremacist who didn't give a fuck about slavery. But, when you have riots at home and people sick of fighting "the rich mans war, the poor mans fight"- he had to find an emotional angle to sucker in the masses. Its a trick used long before Civil War, and still used today.
The more emotional the claim, the less people will cognitively think about said claim. This tactic is used heavily in government propaganda and corporate marketing.
PSA, that was an impressive job of cherry picking history to create a narrative demonizing the North and defending the South. You are clearly a terrible person that I do not wish to know any more about.
Ever wonder why the Emancipation Proclamation was brought forth two years after the war started? Or why it didn't apply to four Northern slave holding states?
Read some of Lincolns pre-election opinions on blacks, you will discover he wasn't the hero we are lead to believe as school children.
But if reading and forming my own opinions is enough for you to declared me "terrible person"... eh, I won't hold my breathe of you doing your own research- save that which your political handlers pre-approve, of course.
Too bad, I was hoping you would be better than that.