| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| historical sources as evidence | 1.9 | 0.6 | 4192 | 40 | 30 |
| historical | 1.76 | 0.7 | 298 | 79 | 10 |
| sources | 1.53 | 0.7 | 562 | 62 | 7 |
| as | 0.94 | 0.8 | 1332 | 25 | 2 |
| evidence | 0.35 | 0.2 | 3466 | 74 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| historical sources as evidence | 0.8 | 0.9 | 5670 | 84 |
