Tricky Geography Trivia

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Across
  1. 3. Island awarded by the first arbitration of the League of Nations
  2. 6. Briefly Soviet naval base in Finland
  3. 10. Controversially-named city in Northern Ireland, British view.
  4. 11. Eponymous mountain of an autonomous theocratic republic.
  5. 12. Main island of the British Overseas Territory where "no person has the right of abode".
  6. 13. Sovereign Belgian railway & bike path.
  7. 16. The other continental Australian federal territory.
  8. 18. Exclave of Angola
  9. 20. Soviet Romania
  10. 21. Istanbul, not ______________
  11. 22. Only remaining Grand Duchy
Down
  1. 1. De facto capital of West Germany.
  2. 2. Pacific French atoll off the coast of Mexico
  3. 4. Here, the poppies blow between the crosses, row on row, that mark their place; and in the sky the larks, still bravely singing, fly.
  4. 5. "When the snow-crowned golden Sierras keep their watch o'er the valley's bloom, it is there I would be in our land by the sea, every breeze bearing rich perfume."
  5. 7. The other nominal province of the Republic of China.
  6. 8. Controversially-named city in Northern Ireland, Irish view.
  7. 9. Name of New Zealand in it's other official Language
  8. 14. Private Hawaiian island
  9. 15. Capital of the Conch Republic.
  10. 17. Subarctic region, part of which is subject to a boundary dispute between two Canadian provinces.
  11. 19. Kaliningrad, first.