24h

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Across
  1. 2. - British Prime Minister during WWII (9 letters, nine)
  2. 6. - Queen of Spain who sponsored Columbus (8 letters, eight)
  3. 7. - Battle site in the Persian Wars (8 letters, eight)
  4. 11. - Legendary sword of King Arthur (9 letters, nine)
  5. 12. - Ancient city-state of Mesopotamia (7 letters, seven)
  6. 13. - Astronomer who supported heliocentrism (7 letters, seven)
  7. 14. - Roman Emperor known for his tyranny (4 letters, four)
Down
  1. 1. - Site of the first atomic bomb dropping (9 letters, nine)
  2. 3. - German airship (8 letters, eight)
  3. 4. - Birthplace of the Renaissance (8 letters, eight)
  4. 5. - First name of Caesar (6 letters, six)
  5. 8. - Historical figure inspiring a famous vampire (7 letters, seven)
  6. 9. - Mongol leader and Emperor of China (6 letters, six)
  7. 10. - American president during the Civil War (7 letters, seven)
  8. 15. - Epic journey of a Greek hero (7 letters, seven)