why was the magnetic compass invented

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
why was the magnetic compass invented	0.85	1	7582	66	37
why	1.75	0.3	9239	19	3
was	1.34	0.8	2685	82	3
the	0.96	1	3217	36	3
magnetic	0.1	0.1	7236	48	8
compass	0.31	0.3	8398	76	7
invented	0.93	1	52	1	8

Keyword	CPC	PCC	Volume	Score
why was the magnetic compass invented	1.79	0.2	6196	23
when was the magnetic compass invented	1.4	0.4	7931	34
when was the magnetic compass created	0.12	1	6800	25
what country invented the magnetic compass	1.38	0.1	2074	50
the creation of the magnetic compass	0.75	1	5442	91
who created the magnetic compass	1.93	0.8	6615	23
what did the magnetic compass do	0.54	0.4	6496	21
magnetic compass date of invention	0.36	0.2	9095	27
who invented the magnetic compass	0.13	0.3	9231	97
where was the magnetic compass invented	1.69	1	396	42
magnetic compass invented	0.11	0.6	4321	23
who invented the first magnetic compass	1.96	0.6	1857	62
who invented the magnetic compass in china	1.87	0.2	9639	25