| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| hard us history questions | 1.91 | 0.1 | 6014 | 85 | 25 |
| hard | 1.93 | 0.1 | 4280 | 79 | 4 |
| us | 0.69 | 0.5 | 5903 | 88 | 2 |
| history | 0.13 | 1 | 6374 | 17 | 7 |
| questions | 0.46 | 0.4 | 1887 | 81 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| hard us history questions | 0.81 | 0.2 | 8819 | 12 |
| hard history questions and answers | 1.98 | 0.9 | 6328 | 67 |
| really hard history questions | 1 | 0.6 | 892 | 73 |
| answer for the hard questions in history | 1.63 | 0.8 | 4121 | 92 |
| what are some hard questions about history | 0.98 | 0.3 | 3247 | 89 |
| hard history quiz questions and answers | 1.96 | 0.1 | 3357 | 36 |
| hardest american history questions | 0.68 | 0.4 | 1352 | 97 |
| hard history test questions | 0.91 | 0.7 | 4416 | 4 |
| hard history quiz questions | 0.16 | 0.8 | 78 | 52 |
| hard us history quiz | 1.36 | 0.2 | 6652 | 9 |
| hard world history questions | 0.5 | 0.2 | 6656 | 100 |
| hardest history questions and answers | 0.13 | 1 | 2746 | 44 |
| difficult history questions and answers | 0.81 | 0.7 | 9159 | 95 |
| very difficult history questions | 0.36 | 0.4 | 8462 | 68 |
| best hardest history questions | 1.57 | 0.5 | 9945 | 46 |
| hardest question of history | 0.63 | 0.9 | 1744 | 47 |
