Intellectual Revolutions

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Across
  1. 4. the founder of psychoanalysis
  2. 6. agricultural tool invented by chinese
  3. 7. Mineral that mayans used in weaving cloth
  4. 9. Aztec's agricultural technology that they use in farming
  5. 11. term that algebra derived from
  6. 14. Charles Darwin's famous work
  7. 16. the most important invention of chinese
  8. 17. medication that the aztec use to prevent spasms
  9. 18. the empire that has paved stone roads
  10. 19. medical discovery of Egypt
  11. 20. light narrow boat used for travelling
  12. 22. a knotted rope that keep records
  13. 23. used in planning their activities, rituals and planting season
  14. 24. by-product of cacao that aztecs use
  15. 25. built hydraulics systems with sophisticated waterways to supply water
  16. 26. use to measure length to a high degree of accuracy
  17. 27. they have three types of calendar
  18. 28. they implemented the mandatory education
  19. 30. famous for the theory of evolution
Down
  1. 1. the lunar calendar of african tribe
  2. 2. they are known for manufacturing iron
  3. 3. result from the experiment of taoist monks that wanted to create a elixir of life
  4. 5. Aztec's tribute to their gods
  5. 8. other medical discovery of Egypt
  6. 10. known for traditional medicines
  7. 12. knowledge that traced to indus valley
  8. 13. Muhammad ibn Musa al-Khwarizmi's mathematic concept
  9. 15. Author of De revolutionibus orbium coelestium
  10. 21. one of the reasons India's known for
  11. 29. traditional medicine practice by the chinese