A lot of people in usa don’t even speak English. I constantly run into those even in the South, let alone big big cities which have posters/ads/instructions label/etc. in foreign languages in public places.
Guess how many people in europe don't even speak:
Bulgarian, Croatian, Czech, Danish, Dutch, English, Estonian, Finnish, French, German, Greek, Hungarian, Irish, Italian, Latvian, Lithuanian, Maltese, Polish, Portuguese, Romanian, Slovak, Slovenian, Spanish or Swedish... or even Esperanto!
Seriously? In my experience, having lived in several places in Europe and in the US: Americans like to pretend that calling it "pop" or "soda" depending on where you are in the country, or Chicagoans having a deeper pizza while food in the bayou is spicier, or Californians liking surf while Iowans are into hunting, constitutes fundamental differences. Meanwhile, they all share the same overall culture: same language, same tv shows, same movies, same school systems, same university systems, same sports, same music, same historical figures and references, same laws, same political figures and topics... There are slight variations here and there, of course; just like in any European country. But ask a Hungarian and a Spanish person if they watched the same shows as kids or learned the same stuff in school, and see where that gets you. Most Americans I've met take their country's cultural baseline for granted and magnify the slight differences among themselves.