I mean, that's just not true.
Everything Europe has, the United States has (population wise). But the United States is also home to significant populations of Native Americans of multiple tribes, as well as South American, Asian, African, and Australian populations. By a large degree, percentage wise. It's literally called "the melting pot" for a reason.
Also it's always amusing to me how Europeans like to include all of Russia as "theirs" when it suits them, when 75+% of it is clearly in Asia.
That said, the point the troll made earlier is true, semantics aside. The European Union is doing now essentially what the United States did hundreds of years ago; bringing multiple regions under the umbrella of one governmental rule. And they're doing it for exactly the same reasons, complete with England doing what states like Texas and Florida have only dreamt of accomplishing.