Across
- 2. watering crops
- 5. same word as farming
- 6. Crescent called the cradle of civilization
- 7. exchanging of goods
- 9. Period developed more sophisticated tools
- 10. of labor people focus on creating one thing becomes great at it
- 11. Age humans began using metal to make tools
- 12. extra product after needs have been met
- 13. left behind after a river floods
Down
- 1. advanced state of human society
- 3. adapting animals for human use
- 4. small city operating like a tiny country
- 5. Revolution people stopped being nomadic and grew plants themselves
- 8. resources materials humans used to meet a need
- 12. hierarchy organizing society into groups