| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what impact did railroads have | 0.14 | 0.8 | 8565 | 47 |
| what impact did the underground railroad have | 1.28 | 0.6 | 9664 | 72 |
| what impact did the railroad have on georgia | 0.02 | 0.9 | 7715 | 50 |
| what impact did the railroad have on society | 1.23 | 0.3 | 9248 | 30 |
| how did the railroad impact society | 0.11 | 1 | 3907 | 57 |
| how did railroads affect america | 0.25 | 0.6 | 6825 | 99 |
| how did railroads affect the economy | 1.49 | 0.8 | 4133 | 66 |
| the impact of railroads in america | 1.4 | 1 | 3723 | 100 |
| how did railroads impact industrialization | 0.24 | 0.1 | 3602 | 17 |
| economic impact of railroads | 1.48 | 0.6 | 803 | 94 |
| effect of railroads on the united states | 0.2 | 0.1 | 7311 | 44 |
| how railroads affected society | 1.85 | 0.3 | 9133 | 71 |
| impact of railroad industry | 1.43 | 0.8 | 3439 | 39 |
