[GOPcapitalist]

So we see from these two examples that slavery is specifically mentioned.

But in single geographic references. Referring to the geographical entity of the slave states is a far cry from identifying slavery as some sort of sole cause for action. Try again.

[Frumious Bandersnatch]

But in single geographic references. Referring to the geographical entity of the slave states is a far cry from identifying slavery as some sort of sole cause for action. Try again.

I suggest reading the supporting documentation.  Firstly, when the southern states talked about their institutions, they were talking about slavery.  The supporting documentation that they offered in support of secession invariably specifically mentioned slavery as the overriding issue.