True. Though, they were
, and so, secession and fighting for your home wasn't treason at that time.>another attempt at secession would be met with the same results.
This I doubt. Mostly because I do not think thanks to developments in information, from video to the internet, means that the North is less likely to get away with their massive pile of scorched earth warcrimes tactics they had going on last time.
It's a lot easier to surrender when the alternative is literally having your homes burned down, your family's livelihood ruined, your economy completely crippled, and entire cities destroyed.
On the other hand, now a days, you try that shit, suddenly a whole lot of other powers in the world say "Hey, that's not cool", arm your rebels, and maybe even get a foot in if the thing looks spicy enough.