Not really. Plenty of nations and powerful empires have lasted for 250 years, just fine, on both more stable and on shakier grounds than the USA.
Don't get me wrong, a nation lasting more than one leader's lifetime is impressive, for sure, but that's like living past the infant mortality rate: Once you account for and ignore that part, there's a real long lifespan period afterwards where the failure rate is pretty low.
Not really. Plenty of nations and powerful empires have lasted for 250 years, just fine, on both more stable and on shakier grounds than the USA.
Don't get me wrong, a nation lasting more than one leader's lifetime is impressive, for sure, but that's like living past the infant mortality rate: Once you account for and ignore that part, there's a real long lifespan period afterwards where the failure rate is pretty low.