Your post is an opinion piece. It too is irrelevant, accepted only by the like minded, who are wrong.
Secession was clearly both legal and constitutional. Those who denied that were driven by their own agendas, ignoring both facts and history. There's was a disservice to liberty and an affront to the founding documents. The shame of the unlawful war and mass murder they brought forth is theirs to bear for all eternity.
I will give you the opportunity to have the last word so the tedious anti-liberty argument will have it's champion.
Good day.
How utterly cowardly of you.