Do you honestly believe that the WBTS was over slavery?
And even more of a fantasy that the war was all about slavery is the "fact" that the North can claim some moral high ground for "ending slavery."
The war was NOT about slavery until Lincoln issued the Emancipation Proclamation.
But I'd almost be willing to concede the slavery issue if the North would admit what we all know to be true.
The North only wanted an "end" to slavery because slavery was no longer profitable for them.. There was no moral outcry (or if it was there it was very small) to free the slaves. And when the union actually enlisted black soldiers, thousands of white union soldiers deserted.
So fine. Say the war was about slavery. But it was about the economics of slavery, not the morality of slavery.
The North may have "wanted" to free the slaves. But they would have fought the war all over again to keep them from moving in next door.