Comparative and superlative speaking...

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Across
  1. 3. Country with the biggest population
  2. 6. Better than Messi
  3. 8. City farther than Turrialba
  4. 10. Most intelligent mathematician ever
  5. 12. Sea mammal smaller than a whale
  6. 13. Most famous Italian dish
  7. 14. Taller than Iguazú Falls
  8. 17. The smallest country in Central America
  9. 18. Rica Most beautiful country in the world
Down
  1. 1. The richest country in Europe
  2. 2. Most famous Disney character
  3. 4. The best way to control money
  4. 5. The finest art of building
  5. 7. Fastest D.C. superhero
  6. 9. Angriest Marvel character
  7. 11. Most common Costa Rican expression
  8. 15. Fastest mammal on Earth
  9. 16. Volcano closer to Cartago