A majority of Europeans speak 2 languages, a quarter speaks 3 or more. So it isn't a white thing, it is an American thing. And it isn't because Americans are dumber than Europeans, it is just because learning new languages makes more sense for Europeans than for Americans due to those languages being smaller and foreign languages being physically closer.
Also mastering a single language is harder than learning to get by in multiple languages, as even though a majority of Europeans can speak multiple languages a majority of them are not really all that good even in their mother tongue as we can see from standardized testing. They aren't worse than Americans, but they aren't better either, they get roughly the same results.
Also mastering a single language is harder than learning to get by in multiple languages, as even though a majority of Europeans can speak multiple languages a majority of them are not really all that good even in their mother tongue as we can see from standardized testing. They aren't worse than Americans, but they aren't better either, they get roughly the same results.