when did german u boat sunk lusitania

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did german u boat sunk lusitania	1.57	0.3	4488	35	37
when	1.08	1	6036	100	4
did	0.19	0.2	9406	7	3
german	0.76	0.8	6646	75	6
u	0.11	0.3	5670	88	1
boat	0.37	0.5	220	80	4
sunk	1.04	0.1	302	41	4
lusitania	0.04	1	8669	34	9

Keyword	CPC	PCC	Volume	Score
when did german u boat sunk lusitania	0.02	0.6	3781	57
german u boat that sunk the lusitania	0.38	0.8	6501	69
lusitania sunk by a german u boat	0.8	0.2	4708	78
lusitania sinking german u boat	1.97	0.1	2833	49
what u boat sunk the lusitania	0.64	0.1	3058	12
when did germany sink the lusitania	0.23	0.6	523	1
when did the german submarine sinks lusitania	0.51	0.9	3944	11
when was lusitania sunk	0.27	1	9541	91
why did german u-boats sink the lusitania	1.75	0.8	1087	41
which u boat sank the lusitania	1.72	0.6	2795	2
when did the lusitania sank	0.71	0.8	4045	56
what year was lusitania sunk	1.84	0.8	1491	25
what date was the lusitania sunk	1.6	0.7	860	13
lusitania sinking german history	0.3	0.4	4677	69
germany sinking the lusitania	1.82	1	2778	86