Most cultures stand out but American culture doesn’t because basically everywhere has some sorta American influence.
Its part of being a good sized country. Russia, China and anywhere else that’s bigger doesn’t have one culture either.
while correct, my rebuttal to that is most of Russia’s people and culture is in eastern eroupe and smaller in size land size to two Texas (roughly I’m estimating in my head please prove me wrong i love to learn) The rest is mostly exploited territory with exploited people. They are not really apart of the Russian culture but also not really allowed to have their own sadly.
As with China I agree they are similar to the US distribution of people but the CCP tries their hardest to stamp that out. Hong Kong is a good example of that as much as it is political one.