Anytime they want
Bad times only
I don't know
And are you aware that secesson sentiment in TX is virtually all among very conservative whites? The Latino population would oppose this to their last breath, as would progressive cities like Austin.
Any secession attempt would lead to violence and a shattered state.
And again, the slave owning elite is not the south.
For that matter, not even those elites would anything to do with someone named Quantrill. The man was a butcher who mass murdered civilians, a bandit posing as a soldier.
The bigger problem is that the US was far too generous to Confederate traitors. And so the Confederate traitors became the terrorist KKK and White Leagues, winning by terrorism and reestablishing white supremacy what they could not win on the battlefield.
And so the US lost when the terrorist KKK won by terrorism. If the US had executed most CSA leaders, the civil rights movement would've been a success, not in the 1950s and 60s, but in the
1860s and 70s.
"Groups with guitars are on the way out, Mr. Epstein"
Dick Rowe, A & R man
"There is no higher religion than human service. To work for the common good is the greatest creed." -Woodrow Wilson
"What a man does for others, not what they do for him, gives him immortality"- Daniel Webster
We've already seen that at the end of the revolutionary war they signed a treaty that proclaimed them to be free and independent states.
Also, the articles of confederation proclaim them to be free and independent states.
Finally, we have the declaration of independence itself:
We, therefore, the Representatives of the united States of America, in General Congress, Assembled, appealing to the Supreme Judge of the world for the rectitude of our intentions, do, in the Name, and by Authority of the good People of these Colonies, solemnly publish and declare, That these United Colonies are, and of Right ought to be Free and Independent States; that they are Absolved from all Allegiance to the British Crown, and that all political connection between them and the State of Great Britain, is and ought to be totally dissolved; and that as Free and Independent States, they have full Power to levy War, conclude Peace, contract Alliances, establish Commerce, and to do all other Acts and Things which Independent States may of right do. And for the support of this Declaration, with a firm reliance on the protection of divine Providence, we mutually pledge to each other our Lives, our Fortunes and our sacred Honor.[emphasis added]