One final note at all of these documents: slavery is mentioned 82 times in all of these documents. The word tariff does not appear once, and it only occurs in one document in two small mentioned. Looking at the seceeding decks own justifications, I don't know how you can say the war was over tariffs.
I would guess, to make secession on tariff matter is not very good. What's wrong to pay the national tariff, or better don't pay that tariff and support national industries? Like the USA government never mention OIL when they attack Iraq! Sure slavery is major part, but I think it was more about slavery economy than about emancipation. No one as I know, both North and South, offered terms or negotiate about emancipation yet until 1863.
By the way, I don't mean if the South has the right to secede or not. I just don't care!