And just because the US imports a lot of consumer goods doesn't mean it has to. Plenty of large defense contractors have manufacturing in the US still and could ramp up if needed.
“barring all out war”…
Given the US military, it’s pretty obvious they still have some manufacturing
Raw materials.
With a country of “400m” today. And working on the assumption of no trade at all. How fast would they burn their whatever resources they have. Which might include lithium, and far more.
Realistically, let’s play in a world where the US decides get all protectionist. And no one is going to care about raping the environment…….inside the US…Do we think the rest of the world, is just going to play nice. Aside from likely ruining what’s left of their middle class. Personally, I’d love to see Alberta turn the taps off today. It’s would near ruin them as dominoes begin.
Fresh water.
luckily for them we are right next door, and luckily we are oh so nice to an ungrateful neighbor and we are already exporting to them…I’ve always wondered how that’s going to play out in years to come. Occasionally have wondered about that following the nuclear option too. Also keep in mind the more agriculture…the more water…
But we are talking about the US power. All empires, in history have failed. Every single one. We could also look at the UK, which back in the day fought for the seas. For the most part won, and was the dominant player projecting power…
Which also needed a lot from everyone else. One big advantage they had back in the day. Was a world to go get what they needed. In fact, we might also remember how and why the US came to be…You all think they are the exception..
…Scales are different, that’s about it. And they all need $ and economies. Never mind, the rot, that is presently within the US today….
Why did the Roman Empire eventually fall apart.