| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | offshore drilling | United States | Significant economic activity and a source of energy independence | 1 |
| 2 | offshore drilling accidents | United States | Led to significant environmental disasters and public outcry | 1 |
| 3 | offshore drilling regulations | United States | Subject to detailed regulations and environmental impact assessments | 1 |