Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
what were created due to the railroad | 1.89 | 0.2 | 3225 | 98 |
why were railroads created | 1.9 | 0.3 | 8745 | 75 |
how did the railroad start | 0.5 | 1 | 6105 | 54 |
why was the railroad invented | 1.66 | 0.9 | 3789 | 96 |
what did railroads cause | 1.02 | 0.7 | 5180 | 39 |
why was the railroad built | 1.99 | 0.8 | 4085 | 11 |
creation of the railroad | 1.25 | 0.2 | 6147 | 94 |
how were railroads made | 0.1 | 0.4 | 2556 | 3 |
who created the railroads | 1.84 | 0.3 | 7498 | 43 |
how was railroad construction made possible | 1.82 | 0.7 | 4904 | 98 |
how did the first railroad work | 1.88 | 0.7 | 2556 | 78 |
how did railroads develop so quickly | 1.7 | 0.3 | 3993 | 79 |
how did the first railroad begin | 0.8 | 0.3 | 7216 | 28 |
the history of railroads | 1.71 | 0.7 | 7938 | 68 |