I suggest you study history. What happened as the roman empire fell? What happened in countries controlled by the british empire as it fell? Look at britain now. Same goes for the ottoman empire. Look at Turkey and the middle east now. Austria Hungary empire...look at germany, the balkans and ukraine now.
These are examples of a US future. The US will fracture into regional states. I expect many of those states will be outright communist dictator governments.
I guess Diversity wasn't their strength.
Well. That came across as a fairly insulting and condescending way to put it, but I also understand you don't know me, but I will accept your "suggestion" at face value as I assume you meant to convey it, and not that you think I am ignorant of it.
It is my observation that the only thing as bad or even worse than discounting the examples of history as is standard operating procedure of the Left, is blindly accepting that those examples cannot be avoided, as far too many people do on both the Left and the Right.