| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what are the source of history | 0.11 | 0.6 | 8599 | 18 |
| what are the source of history enumerate them | 0.97 | 0.9 | 495 | 84 |
| is history.com a reliable source | 1.01 | 0.3 | 1138 | 8 |
| what is a primary source in history | 0.15 | 0.7 | 4678 | 2 |
| history of open source software | 0.26 | 0.9 | 1605 | 52 |
| what is a secondary source in history | 1.04 | 0.4 | 6431 | 10 |
| history of open source | 1.57 | 0.2 | 55 | 14 |
| history source analysis | 1.44 | 1 | 7713 | 18 |
| source of history | 1.22 | 0.9 | 4450 | 99 |
| history skills source analysis | 0.56 | 0.3 | 5925 | 26 |
| enumerate some uses and importance of history | 0.42 | 0.7 | 5466 | 71 |
| what are documented sources of history | 1.22 | 1 | 1825 | 5 |
| examples of sources of history | 1.55 | 0.6 | 2567 | 25 |
| examine the popular source of history | 1.63 | 0.7 | 7892 | 44 |
