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Across
  1. 2. Direction, up on the map
  2. 4. The city known for the Colosseum
  3. 6. This ancient wonder is in Egypt
  4. 8. The country known for the Eiffel Tower
  5. 9. The only country in South America which official language is Portuguese
  6. 11. Prehistoric age
  7. 12. South to the USA
  8. 13. you need it to travel
  9. 14. How is our planet called
  10. 16. The planet closest to the sun
  11. 17. Lived on this planet but are now extinct
  12. 18. European country shaped as a boot
  13. 19. Ocean between the Americas and Europe and Africa
Down
  1. 1. Eras that follow the evolution of Earth through the analysis of fossils
  2. 3. White flag with a red circle in the center
  3. 4. The largest country in the world by land area
  4. 5. The ancient continent
  5. 7. the age we're currently living in
  6. 10. Eras that follow the evolution of man and society through the analysis of human development
  7. 13. the biggest and deepest ocean
  8. 15. 50 states united