Across
- 3. a period when humans used stone tools
- 5. arrange into a systemic code
- 6. a crescent-shaped region in the Middle East
- 8. an ancient Mesopotamian temple tower
- 9. a person who makes copies of documents
- 10. the study of human past
- 13. a member of a people who move from place to place
- 15. an advanced state of human society
- 18. period of time before written records
- 19. a member of people who live chiefly hunting, fishing, etc
- 20. the scientific name for humans
Down
- 1. the critical transition that created agriculture
- 2. to tame an animal to use for farming or as a pet
- 4. a graphical symbol that conveys meaning
- 7. the customs of a particular nation or people
- 11. a logo-syllabic writing system
- 12. the latest period of the stone age
- 14. prehistoric megalithic structure
- 16. an object made by man
- 17. a skilled craft worker who makes things by hand