Across
- 4. helped farmers to dig rows for planting
- 5. a Type of game like chess
- 6. the invention used to make carts
- 7. made out of clay and used as currency
- 8. helped to travel using the wheel
- 9. a musical instrument
Down
- 1. the factory to make clothing
- 2. tools they made them for war
- 3. a form of math
- 6. the invention that lead to communication