True, but, for most Americans, the "need" to become bilingual simply wasn't a thing until recently. (It became a thing mainly because US Spanish-speaking communities are slowly moving northward from where they began in the southernmost states.)

In Europe, it's much easier to run into someone who speaks a different language than you simply by driving to another town.

For the most part, the only two languages Americans have to worry about learning if they want to communicate with neighboring countries is French (because of Canada, although they also speak English) and Spanish (because of the countries to the US's south, including Mexico and others).