Keyword Analysis & Research: when were railroads invented in the us

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when were railroads invented in the us	0.53	0.5	137	61	38
when	1.58	0.9	2870	88	4
were	0.98	0.4	1846	83	4
railroads	1.53	0.2	4512	12	9
invented	1.33	0.9	7108	21	8
in	1.31	0.9	2219	27	2
the	0.33	0.8	4918	98	3
us	0.29	0.3	7667	86	2

Keyword	CPC	PCC	Volume	Score
when were railroads invented in the us	1.9	0.6	6115	11