| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | cultural importance of rivers | Sudan | Rivers like the Nile hold immense historical significance, providing the foundation for ancient civilizations. | 1 |
| 2 | river navigation | Sudan | River navigation along the Nile has been historically crucial for trade, agriculture, and transportation. | 1 |
| 3 | waterways | Libya | Waterways are limited and not a primary source of sustenance or tradition due to desert environments. | 1 |