Until they began protecting sugar a year later. Then they started taxing exports. Then they started taxing production. They taxed damn near everything but slaves. I wonder why?
If protective tariffs were such a big cause, tell us why the North West states who were also opposed to protective tariffs didn't join with the secessionists?
Happily. The Morrill act gave them protection. And if they were so opposed to protectionism, why did practically every single one of them vote for the Morrill Act when it came before the House? Evidently they weren't as anti-protectionist as you claim.