| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| is history a secondary source | 1.04 | 0.9 | 8443 | 99 |
| what is a secondary source in history | 1.29 | 0.7 | 9218 | 13 |
| primary and secondary sources in history | 0.83 | 0.6 | 5492 | 45 |
| secondary sources of history | 1.68 | 0.3 | 2168 | 34 |
| secondary source meaning in history | 1.28 | 0.9 | 7468 | 93 |
| primary source vs secondary source history | 0.78 | 0.7 | 8974 | 46 |
| secondary source history | 1.99 | 0.6 | 7888 | 50 |
| secondary source definition world history | 1.31 | 0.8 | 6355 | 100 |
| is history.com a secondary source | 1.96 | 0.4 | 1994 | 33 |
| history primary or secondary source | 0.92 | 0.6 | 6794 | 9 |
| secondary sources in history are defined as | 0.32 | 0.6 | 2836 | 3 |
| secondary source in history examples | 0.4 | 0.7 | 6026 | 44 |
