what was the first superhero comic crossover

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what was the first superhero comic crossover	1	0.6	2620	67	44
what	1.5	0.9	5138	60	4
was	1.12	0.4	5277	19	3
the	0.25	0.4	673	50	3
first	0.2	0.9	9450	13	5
superhero	1.75	0.7	1055	65	9
comic	0.54	0.7	3569	45	5
crossover	1.46	0.4	6932	49	9

Keyword	CPC	PCC	Volume	Score
what was the first superhero comic crossover	1.82	0.4	7434	1
what was the first superhero crossover	1.09	0.7	6374	20
when was the first comic crossover	0.24	0.3	3162	48
what was the first superhero comic series	1.66	0.4	4250	93
what was the first superhero comic	1.86	0.6	3305	68
what was the first comic book superhero	1.02	0.8	1872	45
what was the first superhero comic adaptation	1.1	0.2	9769	22
what was the first superhero comic character	0.1	0.6	6565	1
what was the first superhero comic created	0.7	0.3	5355	91
who was the first comic superhero	1.21	0.6	6813	50
the first superhero comic book	0.88	0.7	7533	43
what was the first superhero comic published	1.24	1	1209	66
first comic book crossover	1.34	0.1	3549	28
when was the first superhero comic released	0.94	0.4	5772	47
first superhero comic book ever made	1.46	1	515	100
first marvel superhero comic	0.08	0.3	2468	66
classic superhero comic books	0.25	0.8	2593	52
history of superhero comics	1.43	0.3	9456	15