An amazingly wonderful crossword

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Across
  1. 6. European currency.
  2. 7. An individual's internalized representation of aspects of the Earth's surface.
  3. 8. A political organization in Africa.
  4. 9. Canada(Quebec).
  5. 11. Natural disasters, economic advantages, cultural similarities, etc.
  6. 13. Islam.
  7. 14. Hinduism.
  8. 15. Provides water power for SE Africa.
Down
  1. 1. Judaism.
  2. 2. Create rain shadows on the leeward slopes.
  3. 3. composed of countries that are Muslim and speak Arabic.
  4. 4. Buddhism.
  5. 5. Forms boundary between Mexico and U.S.
  6. 10. Christianity.
  7. 12. Flows northward into the Arctic ocean.