| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | trade | Ancient Mesopotamia | Trade often involved bartering and exchange of goods without a standardized currency. | 1 |
| 2 | trade | Ancient Mesopotamian | Trade routes along the Tigris and Euphrates rivers were vital for commerce and cultural exchange | 1 |
| 3 | trade | ancient Mesopotamia | Revolved around local barter and the exchange of goods along rivers like the Tigris and Euphrates | 1 |