Bingo. There’s just no getting around that. The North Offered the South slavery forever by express constitutional amendment. The South turned it down. Obviously secession and the war were not “about” slavery.
And yet, the apologists for the North have the astonishing ability to look right at this fact and not see it.
Years ago when I was in High School we had a hypnotist show come to our auditorium. The man solicited volunteers from the audience, and he would hypnotize them. One of the volunteers was told to forget the number "7". When the hypnotist snapped his fingers to "awaken" the volunteer, he asked him to count to ten.
The fellow said "1,2,3,4,5,6,8,9,10!"
The audience tittered. Again the hypnotist bade him to count to ten. Again he said "1,2,3,4,5,6,8,9,10!"
The audience erupted with laughter while the poor volunteer couldn't seem to comprehend what was happening.
The hypnotist then asked him to add 3+4. The man said "6!" The hypnotist said "Isn't that 3+3? Try again. What is 3+4?" The volunteer said "8!", to which the hypnotists replied, "Isn't that 4+4?"
Of course we in the audience thought this was quite hilarious, and the volunteer couldn't grasp what he was missing.
So too is it with people when you point out the Corwin amendment. It absolutely destroys the claim that the war had anything to do with slavery, but they simply cannot see this in the same manner that the poor volunteer had lost the ability to comprehend the number "7".
Astonishing. People simply want to believe what they want to believe to such an extent that they become literally blind to facts which do not fit their world view.
Slavery might not have been THE reason for the war, but the war, as its outcome, and the assassination of Lincoln, brought the end of slavery.