| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| what are the historical periods | 1.7 | 0.4 | 9764 | 88 | 31 |
| what | 0.9 | 0.7 | 2555 | 24 | 4 |
| are | 1.82 | 1 | 9642 | 9 | 3 |
| the | 1.4 | 0.2 | 6563 | 87 | 3 |
| historical | 0.47 | 0.2 | 422 | 73 | 10 |
| periods | 1.4 | 0.2 | 9230 | 65 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what are the historical periods | 0.63 | 0.4 | 8802 | 78 |
