| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| how long ago was the pennsylvanian period | 0.87 | 0.3 | 5567 | 34 | 41 |
| how | 0.43 | 0.9 | 2005 | 21 | 3 |
| long | 0.14 | 0.3 | 9246 | 81 | 4 |
| ago | 1.34 | 0.5 | 8441 | 20 | 3 |
| was | 0.45 | 0.1 | 6582 | 42 | 3 |
| the | 0.99 | 0.1 | 4260 | 74 | 3 |
| pennsylvanian | 0.76 | 0.7 | 423 | 48 | 13 |
| period | 1.97 | 0.1 | 5745 | 5 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| how long ago was the pennsylvanian period | 1.67 | 0.9 | 9263 | 16 |
| what is the pennsylvanian period | 1.33 | 0.8 | 3006 | 80 |
| when did the pennsylvanian period end | 1.39 | 0.6 | 5852 | 49 |
| timeline of pennsylvania history | 1.72 | 0.7 | 7354 | 53 |
| when was pennsylvania found | 0.12 | 1 | 5602 | 32 |
| the history of pennsylvania | 1.03 | 1 | 2452 | 3 |
| timeline of pa history | 1.09 | 0.4 | 5496 | 2 |
| when was pennsylvania colonized | 0.98 | 0.1 | 6479 | 27 |
| what year was pennsylvania settled | 1.04 | 0.3 | 5429 | 62 |
| early history of pennsylvania | 1.79 | 0.6 | 1368 | 35 |
| when was pennsylvania created | 1.23 | 0.8 | 6916 | 83 |
| when was pennsylvania made | 0.9 | 0.6 | 4417 | 61 |
| when was pennsylvania settled | 0.19 | 0.5 | 2085 | 98 |
| what year was pennsylvania established | 0.29 | 0.9 | 7918 | 15 |
| in what year was pennsylvania founded | 1.43 | 0.8 | 7055 | 43 |
| how old is pennsylvania | 1.66 | 0.3 | 3215 | 1 |
| when was pennsylvania established | 1.7 | 0.9 | 9139 | 22 |
| pennsylvania in colonial times | 1.34 | 1 | 2521 | 27 |
| history facts about pennsylvania | 0.56 | 0.6 | 716 | 78 |
| pennsylvania facts and history | 0.19 | 1 | 9493 | 86 |
