The US was, and remained, stable through those events. Were the US to become unstable, it is true that it would likely take the rest of the economic world with

The US was, and remained, stable through those events. Were the US to become unstable, it is true that it would likely take the rest of the economic world with it, but eventually countries with some stability would start to recover. Whereas, whatever conditions made the US unstable would likely only be exacerbated in the mess – economic downturns are not a good time to find stability! – making recovery improbable.