What country is this?

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Across
  1. 2. The richest country in the world
  2. 4. Here you can find the Great-Man Made River, an irrigation system
  3. 6. The country that contains the Colosseum, one of the 7 wonders of the world
  4. 7. The country with the biggest Muslim population
  5. 9. The country that has the biggest population
  6. 11. The country that contains the tallest building in the world
  7. 12. The country with the most debt
Down
  1. 1. The country that has the largest airport in the world
  2. 3. The country that contains the Great Pyramid of Cholula
  3. 5. 65% of the highways here don't have a speed limit
  4. 8. This place is famous for its pyramids and a river that stretches 4,132 miles
  5. 10. The country with the lowest crime rate