Should looted works of art be returned to their country of origin ?

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Across
  1. 3. It is something precious that is often used for ornaments.
  2. 5. It is an object that proves the existence of the past, of these events...
  3. 7. It's precious things passed down from previous generations;
  4. 8. It's a public exhibition of works of art or objects of interest, organized in an art gallery, a museum or at a trade fair
Down
  1. 1. It's when you send something back to their own country.
  2. 2. It is a place where works of art are preserved and where they can be admired.
  3. 4. It's a creative field, invented by humans
  4. 6. It's when you steal something from a place