I think it is because of the USA that english became the new international language,
till the middle twentieth century, in countries were english was not spoken as first languge, it was even more common in the periphery to study french, or even german than english, since those 2 languages had high class, scientific, literary prestige, and also greek and latin were still commonly taught back then, it is only after the ww2, and hollywood, and rock music and the USA as super power, that french, german, latin, greek were dropped, and english became the language to learn for everybody.