just as natural selection is not longer actually true because of the implications of our emotions and politics etc. natural selection when it comes to nations is also not really true because of similar reasons. cough cough ISRAEL. I agree that the US may be in trouble. We have a lot of long run economic problems. but no more than any other individual nation. the problem is with a situation we may be in later on becuase of past decisions.

We may be on giant Nation of Earth in the future, but I'm guessing it will be more due to political decisions than thee actual strenth of each individual nation.