That would throw under the bus a lot of race-and-IQ suppositions seeing how Africans commonly speak 3 or 4 languages, sometimes more, and a large majority of white people and Asians are monolingual.
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.
You haven't met many Europeans have you. Not all of them are Dutch, Scandinavian, urban youth or immigrants.
>a majority of them are not really all that good even in their mother tongue as we can see from standardized testing
This makes no sense. You can't be not good in your mother tongue - it's your mother tongue. Standardized testing has no say about how a language is structured, that's an absurdly prescriptivist point of view. As for foreign language ability, in real life it's not assessed by making them sit down and pass test questions, it's assessed by having them speak and write close to a native. Someone who casually uses slang, "bad forms" and occasionally makes native-sounding mistakes is more proficient at a language than someone who speaks an academic version of it and got good grades at a test.
Speaking three languages is not a big deal when you live in a village where everyone else speaks them.
>You haven't met many Europeans have you. Not all of them are Dutch, Scandinavian, urban youth, immigrants or throwawaybbb's great-grand-mother.
Please edit "white people" to "American and Chinese white people"... people from smaller countries are more prone to knowing more languages :P Also, people who migrate or travel a lot. Also, since race discrimination is still a thing in the US and not only, smart people of color do their best to appear at least as smart as they really are, and knowing foreign languages probably helps a lot.
Being white and of the right nationality in a developed country simply allows you to be lazier, and you can afford to appear "dumb" in casual life, or to focus on only what you care about, hence you'd probably not bother learning any foreign languages, the ROI would be very bad for you, others will learn your native language instead... We all have limited amounts of brainpower and we try to invest it as well as we can.
https://en.wikipedia.org/wiki/African_immigration_to_the_Uni...