I suspect the US would be like that. It won’t be Civil War so much as a federal government that can’t or won’t protect us. Areas will defend themselves, with different cultures and different skill sets setting the direction.
Anyone recommend any fiction books based on the premise of a modern day US civil war?
It isn’t just the militias that will be necessary. There will have to be a population that has a community memory of survival skills....hunting and gathering, farming, fishing, building things, healthy sustainable living etc.