Reveal this Civilization

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Across
  1. 3. - God of Sea
  2. 4. - Famous battle between Greeks and Persians also rhymes with Walkathon
  3. 6. - Mathematician and principle developed on his name is related to the concept of buoyancy in Physics
  4. 8. - Theorem developed by Philosopher helpful in geometry with triangle
  5. 10. - Types of stories with talking animals and has moral
  6. 12. - Language spoken in Athens
  7. 13. - The city-state known for its strict military training and discipline which also links with the renowned dialogue of Avengers Assemble
Down
  1. 1. - Hero of a war who had a vulnerable heel
  2. 2. - Wooden horse used in wars
  3. 5. - Goddess of the city of Athens
  4. 7. - Continent of Italy, France and Germany
  5. 9. The Great - B C Conqueror
  6. 11. - God of Lightning