orygin

Weren’t there native tribes living on the continent before the us was created?
But yeah, the land here has been inhabited for a long time. There’s a major Paleolithic site near where I live.
Seems Europe as a whole also has a distribution of small and large countries, even though the us has more of them and more land

It got a bit more homogeneous after Walloon and dutch dialects were removed in favor of Paris french (while Flemish stayed a bit more different than Dutch but officially it’s NL Dutch).

For the sub-cultures hub in the USA yeah, there’s a lot of them, a direct result of the colonisation of the continent. But I think what most Europeans compare against is the exported American culture (from movies, music and whatever fads start there), which is pretty homogeneous (ie, mostly capitalist and individualist) but doesn’t really reflect the variety you can find “on the ground”.
Tbf, the Walloon settlement in the US (Namur, Wisconsin) is pretty small, I couldn’t find exact numbers but seems to have a population of a thousand, and the Walloon language is disappearing

Belgium. The current country was founded in 1830. We have Wallonia and Flanders who speak different languages, each province has or had its own dialect but it has merged mainly into french and dutch, with a bit of German in the east. The country itself is probably smaller than any us state, but I don’t know all the sizes of them.
Funnily enough, there is a small town in the US with Belgian immigrants that still speak older dialects of Walloon.

Less than 200 years old. And we have 3 languages, a huge cultural divide between the north and south, and more diversity in our provinces than in between us states.