There is more to be said about multiple languages in single countries. Ireland, the Roman Catholic southern part has lots of English speakers, but the official language is Gaelic. My wife had to learn it to graduate from University College Dublin in the 1950s.
The Philippines, another country with English speakers, has two official languages, the other is sometimes called Philippino and somewhat more often Tagalog. Of course they have over 700 islands and nearly that many other languages so most high school graduates speak at least three or four languages. See some of the stories by Very Well Aged here and also his site on ASSTR. His stories were affected by the no sex under 14 years old rule, so some of the recent ones aren't here.