4-letter countries

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Across
  1. 3. 1/3 of this country is covered by the Sahara
  2. 4. Nicknamed "The Land of a Million Elephants"
  3. 5. Expensive bottled water
  4. 7. Developed the ancient Aflaj Irrigation System
  5. 9. Its name means "fertile"; one of the oldest civilizations
  6. 10. Where we can see the phenomenal Nazca Lines
Down
  1. 1. Home of Mansa Musa, the richest person ever lived (400bn today)
  2. 2. You need to go to this place. :)
  3. 3. Churchill's go to for cigars
  4. 6. Women in this country recently cut their hair as a protest
  5. 8. This country issued Pokemon currency in 2001