European Union crossword puzzle

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Across
  1. 3. to get better at something.
  2. 6. what you discover when you go abroad.
  3. 7. One of the symbols of a country, it floats over buildings
  4. 9. habits typical to one culture or country.
  5. 10. when you give and receive, there is an ________
  6. 12. many of them are spoken in the EU
  7. 13. when there is peace
  8. 15. The EU motto : Union in _____________
  9. 16. another word for competences.
  10. 17. to make something possible or give permission
Down
  1. 1. a sentence which is the symbol of a country.
  2. 2. an official song.
  3. 4. adjective related to Europe
  4. 5. you can see twelve on the flag
  5. 8. fist word of the title of a song which is a symbol of the EU
  6. 9. money used in a specific zone
  7. 11. there are 28 of them in the EU
  8. 14. that's where you are when you are not in your country.