| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| railroads us history definition | 1.92 | 0.3 | 3999 | 85 | 31 |
| railroads | 1.94 | 0.2 | 2739 | 39 | 9 |
| us | 1.84 | 0.1 | 3744 | 76 | 2 |
| history | 1.07 | 0.3 | 8144 | 72 | 7 |
| definition | 1.62 | 0.7 | 4694 | 35 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| railroads us history definition | 1.87 | 0.1 | 322 | 38 |
| railroads definition world history | 0.68 | 0.8 | 8081 | 31 |
| history of us railroads | 1.12 | 0.9 | 7111 | 27 |
| railroad in us history | 0.25 | 0.5 | 7696 | 14 |
| history of railroads in the united states | 1.07 | 0.6 | 5003 | 96 |
| the history of railroads in america | 0.65 | 0.7 | 3867 | 75 |
| the history of american railroads | 1 | 0.1 | 1654 | 67 |
| history of the railroad in usa | 1 | 0.8 | 6837 | 45 |
| united states railroad history | 0.28 | 0.6 | 5468 | 16 |
| the american railroad history | 0.06 | 0.7 | 6913 | 23 |
| what was the railroad | 0.25 | 0.8 | 9258 | 97 |
