Crossword to "Aboriginal People"

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Across
  1. 2. A group of indigenous people
  2. 5. something that happens, especially something unusual or unpleasant
  3. 7. to cause something to start or develop, especially suddenly
  4. 9. find the origin or cause of something
  5. 11. to destroy or get rid of something completely, especially something bad
  6. 12. A small child
Down
  1. 1. To get something back
  2. 3. to enter a country, town, etc. using military force in order to take control of it
  3. 4. according to the time of year
  4. 6. to form an idea of the cost, size, value etc. of something, but without calculating it exactly
  5. 8. the process of people making their homes in a place
  6. 10. developing, growing, etc. gradually and in an even and regular way