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1.
Official languages in Belgium.
2.
Countries using the Euro.
4.
Capital cities of European countries.
5.
Rivers flowing through Europe.
6.
Countries bordering Serbia.
7.
European Union members.
8.
Bordering both Austria and Switzerland.
9.
Mountain ranges in Europe.
10.
Countries where German is an official language.
12.
Asian countries bordering Europe.
13.
Countries bordering the Adriatic Sea.
14.
Founders of the European Union.
15.
The capital cities of these countries begins with the letter R.