| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| history of american railroads | 0.14 | 1 | 795 | 20 | 29 |
| history | 0.24 | 0.3 | 1605 | 27 | 7 |
| of | 0.56 | 0.8 | 9527 | 52 | 2 |
| american | 1.42 | 0.3 | 4764 | 76 | 8 |
| railroads | 1.24 | 0.1 | 2603 | 1 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| history of american railroads | 0.26 | 0.1 | 2844 | 8 |
