Let's say Georgia did secede and form the Free State of Georgia. If they did this, wouldn't it be possible for Georgians to declare themselves as also American? Couldn't they be both American, as the Confederates were, and independent?
Not quite. It's the whole New World/Old World thing. There will be a Scotland as long as the cultural chain of Scotland's history is still around. If the USA is broken up, there is no more America as we've known it. The great experiment will, in some capacity, be over. That's why the civil war was our darkest hour, not the revolution, either of the World Wars, or the Cold War. Brother against brother, not just fighting one another but fighting to decide if America will continue to really exist. If the Confederates had won, neither the North nor the South would have ever been the same. The South would have essentially embraced the dark side, and the North would likely never get past the wound of the South's absence. Even if they grew to hate the South and see them as another people, which they probably would have, the North would never have really been America again either. We just barely avoided that fate with the way things did happen, such was the divide that the South and the rest still carry the aftermath of that rift 150 years later.
I could survive America ending. I could be a Carolinian exclusively. But I wouldn't really be an American anymore.
And yet...when Coca-Cola ran that ad during the Super Bowl that had people singing America the Beautiful in seven different languages, there was a LOT of uproar from some corners (the usual, cockroach-infested corners).
Nothing about our national identity is easy, nor has it ever been. It goes against most human nature to try to reject the idea of exclusion and isolation from all other people (exceptionalism is a problem everywhere, but I think this is why American exceptionalism is particularly recognized), and to try to weaken the wall of Us vs. Them. Everybody knew when it was written that the Constitution was more naturally a racially equal document than a racially exclusive one, and it took us
centuries and a lot of death to even get that relatively correct in a national context.
And while people complained, the ad still did run, and plenty of people saw it for what it was instead of having that visceral reaction. That, I think, is where our value as a people is. I believe that we have the capacity to strive for the ideals we say we represent.