States rights vis a vis the Federal government dictating to the states.
War of Northern Aggression because the North waged economic warfare against the South for many years prior to the South firing the first shot.
I’ll grant that slavery was an issue, but the war was about economics — high tariffs, imposed by Yankee industrialist’s bought and paid for Congressmen and Senators, were strangling the South.
EXACTLY, something schools do not teach anymore.