when was the columbian exchange end

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when was the columbian exchange end	1.15	0.4	5813	70	35
when	1	1	3933	29	4
was	1.9	0.9	9593	46	3
the	1.87	0.6	6047	97	3
columbian	0.24	0.3	8731	36	9
exchange	1.69	0.4	3426	88	8
end	1.46	0.2	7383	74	3

Keyword	CPC	PCC	Volume	Score
when was the columbian exchange end	1.22	0.6	4152	10
when was the columbian exchange date	0.85	0.4	9002	29
when did the columbian exchange end	1.59	0.1	6517	16
when did the columbian exchange start and end	0.5	0.6	4543	45
columbian exchange start and end	1.29	0.7	7308	26
how did the columbian exchange end	0.83	0.9	754	24
when did the columbian exchange begin and end	0.68	0.2	4472	2
why did the columbian exchange end	1.45	0.2	2674	72
what year did the columbian exchange end	0.07	0.2	6383	99
columbian exchange start and end date	0.55	0.3	6658	66
columbian exchange end date	0.78	0.4	714	80
start of columbian exchange	0.17	0.1	6472	22
columbian exchange start date	1.94	0.3	2000	52
beginning of columbian exchange	1.95	0.2	7855	25
the columbian exchange date	1.43	0.3	1249	89
when is the columbian exchange	0.92	0.6	7089	63
the columbian exchange event timeline	1.44	0.2	3624	58
columbian exchange time frame	0.44	0.6	6841	74
the columbian exchange timeline	1.79	0.1	1352	48
columbian exchange date time period	0.06	0.3	107	6