| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | clay | Mesopotamia | Historically used for making bricks and building materials for construction | 1 |
| 2 | clay tablets | Ancient Mesopotamia | Commonly used for writing and record-keeping | 1 |
| 3 | clay tablets | Ancient Mesopotamia | Associated with cuneiform writing system | 1 |
| 4 | clay tablets | Ancient Mesopotamia | Used for legal and administrative records | 1 |
| 5 | clay tablets | Ancient Mesopotamia | Frequently used in education for teaching and learning | 1 |