| A | B |
|---|
| exchange | consumers and producers agree to provide one item for another. |
| barter | exchanging one set of goods for another. |
| money | Any item accepted that is readily available. |
| credit | Allows consumers to use items before completing payment. |
| value | amount of money, or price |
| utility | product or service is useful |
| self-sufficiency | People or societies can fulfill all their needs without outside assistance. |
| interdependence | events or developments in one region influences event in other regions. |
