A little history reading on your part, Non, might help you. The south didn't revolt, they seceded from the Union legally as allowed by the US constitution. The North started the war because they didn't want the south to secede,legal or not. If the north had left the south alone there would have been no war and we would now be split into two nations, perhaps not a good thing but it would have been legally done. The north used force of arms to coerce the south to rejoin the Union. To this day the states have the right to break away from the Union if they wish.
Great...what article and section?
And can you explain how we wouldn't have a balkanized America if we played by those rules?