Ironically as I saw the language barrier is stronger in EUW, which consist of the major languages, such as English, French, Spanish, German, because e.g french people are reluctant to speak english or german for example. In EUNE people are more likely to speak English, even if it is gibberish, because of the language diversity. Of course people will talk in their own language, but mostly about stuff unrelated to the game. I find it rather nice to be honest, because after a while you start picking up their language and you will actually understand them. Usually in the EUNE it is mostly the polish people, who prefer their own language over english, but it's not even close to be that bad as in the case of the french. Also polish is easier to pick up than french. Furthermore most of the languages are slavic, so e.g if you start picking up czech you also get to understand slovakian, because of the similarity. Same is true for the balkans. The only problematic languages are romanian, hungarian and finnish etc., which don't really have any similar pair and are relatively harder to pick up. Especially hungarian (I'm a hungarian btw, our language is so hard that even native hungarians can't speak it properly for most part).
