Crack the code, Name the countries

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Across
  1. 2. Grand Duchy
  2. 4. Steppe
  3. 6. Genghis Khan
  4. 7. Lemurs
  5. 10. Knights
Down
  1. 1. Happiness
  2. 3. Coffee origin
  3. 5. Issyk - kul
  4. 8. Dutch Guiana
  5. 9. Peninsula