| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what are the source of history | 0.65 | 0.2 | 1201 | 15 |
| what are the source of history enumerate them | 0.92 | 0.6 | 3722 | 29 |
| is history.com a reliable source | 0.68 | 0.5 | 9483 | 21 |
| what is a primary source in history | 0.46 | 0.1 | 9268 | 14 |
| history of open source software | 0.11 | 0.3 | 8310 | 44 |
| what is a secondary source in history | 2 | 0.2 | 2243 | 51 |
| history of open source | 0.78 | 0.1 | 2204 | 16 |
| history source analysis | 0.71 | 0.7 | 8539 | 28 |
| history skills source analysis | 1.73 | 0.2 | 6901 | 34 |
| source of history | 0.48 | 0.1 | 3869 | 7 |
| enumerate some uses and importance of history | 0.78 | 0.8 | 3686 | 79 |
| what are documented sources of history | 0.1 | 0.7 | 3466 | 72 |
| examples of sources of history | 0.42 | 0.3 | 1289 | 92 |
| examine the popular source of history | 0.73 | 0.7 | 194 | 7 |
