It's fascinating to think about how cultural evolution would develop if industrial civilization gradually declined back into an agrarian paradigm.

I say gradually, because if it collapsed overnight the vast majority of humans would be doomed to starve to death. And billions of people starving to death would proceed to utterly ravage the environment consuming anything edible, until there's nothing left.

We still have a very long way to go until peak oil of course, and I'm cautiously optimistic about nuclear, hydroelectric, and geothermal power eventually replacing fossil fuels. But if that fails to happen, and we end up un-developing slowly enough to avert the aforementioned nightmare scenario, the various cultures that develop in the former US are gonna be absolutely wild.