The south did exactly what the original 13 colonies did - they seceded. America was founded on secession. THINK, white-hating racist.
Yes, the Southern insurrection and that of the American colonies of Britain are the same in that both were illegal and were a risky gambit. Here's the problem with your attempt to recover from the prior beatdown I administered on you, the South lost, dumbass. Britain considered it illegal until the exact moment they lost, stupid.
Winners and rainmakers call the shots and write the rules. Don't you forget it. Had the South won, yes, it would have been sovereign with all that flows from that.
Now leave my classroom for 3 days and don't come back.