None of the countries you mention sustained a multi-century attack by foreign powers... most endured less than a decade of attacks due to either being an ally/

None of the countries you mention sustained a multi-century attack by foreign powers... most endured less than a decade of attacks due to either being an ally/ or racially similar (lets not forget how racist we Europeans were, gladly many have reformed). Also China is passing/will pass USA (and the world) in most important economic metrics this decade. So, some of your wishes are actively being answered in reality. USA shouldn't blame itself for being passed though, can't hold down a multi-millenia spanning superpower for long, the Chinese people are resilient (and they have a lot of proof of work). Just hope Trump doesn't destroy what could be a great peaceful freindship between nations.