I've always thought that a world where English was every country's sole official language would be better for preserving small minority languages. Typically, if

I've always thought that a world where English was every country's sole official language would be better for preserving small minority languages. Typically, if you're a minority Kneebonian in Elbonia, you have a "triple burden": 1. You want to learn English or some other regional "useful language" to get a good job in an international company 2. You may want to learn/maintain your command of Kneebonese --- a "useless language" economically, but it gives you ethnic pride and access to Kneebonian community "social capital" 3. Your government forces you to learn equally-useless Elbonese in the name of "national unity", e.g. by making it mandatory for high school exams. But learning it won't actually give you access to Elbonian "social capital", because of discrimination. In practise, a significant proportion of Kneebonian parents relieve their kids of the "triple burden" by speaking Elbonese to them. Then 10-20 years later, you get a lot of Kneebonian kids who feel they have no other means to "prove" their ethnic identity, except demonstrating fierce "Kneebonian PrYDe4LyFe bro!" at every opportunity --- usually in the form of anti-Elbonian prejudice. So losing the language doesn't necessarily kill the culture, but it does mean that it'll get twisted it increasingly ugly shapes by kids trying to overcompensate for the loss of a big part of their heritage.