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