Australia

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Across
  1. 3. the region that includes Australia
  2. 7. the political form of Australia
  3. 9. the kind of spread
  4. 10. a returning weapon
  5. 11. the famous explorer of Australia
  6. 12. the biggest city
Down
  1. 1. the capital of Australia
  2. 2. an island, the part of Australia
  3. 4. original inhabitants of Australia
  4. 5. the original name of Australia
  5. 6. a duck-billed egg-lying mammal
  6. 8. the venue of Olympics in 1956