Where in the world?

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Across
  1. 4. Ocean east of America
  2. 6. South American river
  3. 9. A mountain in Africa
  4. 10. City on the River Nile
  5. 11. City on the River Yangtze
  6. 13. South American city
Down
  1. 1. Everest is in these mountains
  2. 2. River in Africa
  3. 3. Ocean east of Africa
  4. 4. Aconcagua is in these mountains
  5. 5. River that is located in Africa and its length is 4670km
  6. 7. South America's highest mountain
  7. 8. Russia's capital city
  8. 12. Congo River that is located in Asia and its length is 5150km
  9. 14. World's highest mountain