The South was right to want no part of American imperialism. You can CAN the slavery argument because the United States did not actually ban slavery, it just nationalized it. Read the wording of the 13th amendment. The way laws are worded matters.
And in this country today, we treat homeless people worse than slave owners treated slaves. Not only that, we are being brainwashed to hate Russians when Canadians and other NATO terrorists are more of a threat to our civil liberties.
The wrong side won both the “civil war“ and the cold war.