Across
- 3. - Alphabet's purple-dye sailors
- 6. - Nile's pyramid pharaohs
- 8. - Calendar codex keepers of Yucatán
- 10. - Knossos's bull-leaping frescoes
- 11. - Parthenon's olive-crowned democrats
- 13. - Cyrus's immortal empire builders
- 15. - Machu Picchu's Andean road masters
- 17. - Druid's torc-wearing iron agers
- 18. - Cradle's ziggurat scribes
- 19. - Hannibal's elephant-crossing rivals
Down
- 1. - Hanging gardens' Ishtar gate
- 2. - Colossal head jade carvers
- 4. - Indus valley's planned brick cities
- 5. - Longship's rune-carved raiders
- 7. - Forum's aqueduct legionaries
- 9. - Lion hunt bas-relief warriors
- 12. - Tomb's frescoed precursor Italians
- 14. - Iron chariot's Anatolian forgers
- 16. - Cuneiform's wheel inventors
- 20. - Tenochtitlán's eagle-cactus founders