And I always thought they've fought for their right to secession from the union, federal government of which decided to bleed their economy dry with trade tariffs and homestead act.
Not to mention the fact that the union abolished slavery 1,5 years after the war started.
So tell the slavery story to Delaware, Kentucky, Missouri and Maryland which, in the end, didn't left the union.
Let's hear what Mr. Lincoln has to say on the subject, shall we?
"My paramount object in this struggle is to save the Union, and is not either to save or to destroy slavery. If I could save the Union without freeing any slave I would do it, and if I could save it by freeing all the slaves I would do it; and if I could save it by freeing some and leaving others alone I would also do that. What I do about slavery, and the colored race, I do because I believe it helps to save the Union; and what I forbear, I forbear because I do not believe it would help to save the Union ... I have here stated my purpose according to my view of official duty; and I intend no modification of my oft-expressed personal wish that all men everywhere could be free."
War for freedom, yeah, right.