when did the railroad start

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did the railroad start	1.89	0.7	9837	69	27
when	1.84	0.1	8065	73	4
did	0.06	0.7	6252	43	3
the	0.16	0.1	1084	93	3
railroad	1.45	0.2	3107	60	8
start	0.69	0.4	5668	48	5

Keyword	CPC	PCC	Volume	Score
when did the railroad start	0.72	0.2	7218	40
when did the railroad start in america	1.09	1	1266	67
when did the underground railroad start	1.43	0.3	5753	28
how did the underground railroad start	1.58	0.6	2072	26
when did the transcontinental railroad start	0.3	0.8	7538	83
when did the union pacific railroad start	1.54	0.2	4550	86
when did the central pacific railroad start	1.76	0.8	8118	93
when did the continental railroad start	0.57	0.7	3227	24
when did the santa fe railroad start	1.28	0.7	6478	51
when did the railroad system start	0.22	0.6	8199	63