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