Slavery was just one bullet point in the federal government’s list of acts against the states as was the Morrill Tariff. This and other taxes/tariffs that the northern states were trying to impose were strictly meant to hamstring the south and keep them behind the industrial north via protectionism. The north feared growth in the south and the availability of cheap labor either by slaves or the poor citizenry and acted to stifle growth in the south.
Just curious. Were you aware that two of the highest tariffs protected sugar growers and hemp growers, all in slave states?
The Morrill tariff would never have passed both houses of congress if the Southern states had remained in the Union. It only passed after secession and the Southern states withdrew their representives from congress.
Please tell us some more of your supposed bullet points. I can't find any of them in the list of reasons the Confederates gave.