yep. they were worried about their rights to have slaves.
That's not correct. The overwhelming majority of those who fought for the Confederacy didn't own slaves. There were a few who were concerned with the Federal government taking what the Federal government had already said was their legally-owned property. You (and others) like to pretend the US government had somehow condemned slavery and the South defiantly refused to let go of it. There was NEVER any such condemnation by Congress or the Courts. They REPEATEDLY upheld the institution of slavery and defined slaves as personal property owned by their masters. In THAT context, they were absolutely wrong in wanting to take the legitimate property of individuals. That's a direct violation of the 4th Amendment until your Court determines slaves are human beings with human rights... which they
never did. That is NOT the fault of the CSA.