3. German
German, just like French, is one of the important languages in Europe. As a matter of fact, besides English, German is the most spoken language in Europe. Moreover, it’s the official language in Germany, Austria, and Liechtenstein, and it is a co-official language in Switzerland, Belgium, and Luxembourg. It is also one of the three working languages of the EU alongside English and French, which are, by the way, most studied languages in Europe.