Across
- 3. Act of buying and selling something
- 5. A metal used as money
- 6. Small piece of metal used as money
- 7. shell A shiny oval-shaped shell that was used as money
- 8. To give something and receive something else in return
Down
- 1. Exchanging goods or services
- 2. A stamp used to show something is official
- 4. Farm animals used for food or trade
- 6. A system of money used in a country