Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
growth of railroads in the 19th century | 1.85 | 0.6 | 5246 | 19 |
the growth of railroads in the 1850s | 0.36 | 0.7 | 5795 | 75 |
railroads in the 19th century | 0.19 | 0.9 | 1034 | 97 |
railroads in the late 19th century | 0.61 | 0.2 | 2748 | 42 |
the growth of railroads | 1.52 | 0.8 | 3743 | 73 |
railroad expansion late 19th century | 0.36 | 0.6 | 3655 | 81 |
the growth of american railroads | 0.61 | 1 | 6444 | 64 |
the railway in the nineteenth century | 0.86 | 0.8 | 7455 | 69 |
the importance of railroads in the 1800s | 1.74 | 0.1 | 9218 | 49 |
railroad development in the 1800s | 0.02 | 1 | 1776 | 98 |
railroads in the early 1900s | 1.57 | 0.7 | 2601 | 61 |
the history of railroads | 0.32 | 0.8 | 5214 | 91 |
impact of railroads in 1800 | 1.66 | 0.7 | 4047 | 78 |
facts about railroads in the 1800s | 1.21 | 0.6 | 6850 | 72 |
how were railroads built in the 1800s | 1.11 | 0.6 | 5894 | 27 |
railroads in the early 1800s | 0.22 | 0.3 | 6503 | 22 |
railroad industry in the 1800s | 0.62 | 0.4 | 801 | 52 |
railroad construction in the 1800s | 1.88 | 0.5 | 1201 | 26 |
development of the railroad | 0.54 | 0.6 | 4804 | 92 |
railroads and american economic growth | 0.24 | 0.1 | 6122 | 46 |