Don't get me wrong, I am NOT saying that states lack the right to secede, I'm saying that the Confederate states failed to properly address the topic.
To illustrate, it is not typically understood that colonies have the right to declare their independence from a monarchy; however, in 1776 the Founding Fathers set out a declaration of reasons for the Declaration. The reasons Jefferson and the others identified were based on PAST AND PRESENT wrongs. South Carolina only identified wrongs that they ANTICIPATED in the future (and far too many of them were specific to slavery).
The colonies ere independent from each other.