The US will carry on.

We on the other hand can only serve to grease the gears of the great death machine if nothing is done to stop it, and there are always enough bodies left to keep this going.

The rest of the world will have to collapse before the USA does.

If we mean secessionist movements start breaking off, I feel like it’s be anywhere from very late 20s-early 30s if a full economic depression hits, or the 50s/60s if it declines at a linear pace

2025

Going to copy my answer from lemmygrad

The US has many years left. If anything, Europe will "collapse" before the US as the USA consumes it through the process of vassalisation to keep itself alive. First the US will try win the the inter imperial rivalry between itself and it's allies (the EU and it's biggest member states, Australia, South Korea, Japan), which seems to be going well on the EU front given the Ukraine war. The EU is being successfully vassalised and has lost energy independence after the nordstream gas pipeline bombings, and is being forced to give it's current weaponry to Ukraine, and buy US made weapons to replace those outgoing arms. Then the US will shift focus to China, and try to beat them.

I know people want to be optimistic, but the US is still a superpower. If you asked communists in the 1950s and early 60s, they probably also thought that the US had little time left, given the progress of the USSR, the rise of anti colonial movements, and the US still struggling massively with internal issues. But in the end, it was the USSR that collapsed, and the neoliberals got their "end of history" moment, until 9/11 happened.

I think this baby's got a lot of juice still kickin' in her. Probably at least another 50-60 years.

it will look nearly exactly like Cloud Atlas predicts is all i know

I dunno how long the United States will last but I know that Nee York will last longer.