Answer:
Scholar Alfred W. Crosby used this passage “ this Columbian exchange ” to depict this general change of plants, creatures, society, innovations, people, and illness between this world’s Eastern and Western Hemispheres as a result of the voyages of discovery that began with Christopher Columbus in 1492. Crosby wrote that this change “ has made markets for continent without which she could.Be today a very different and a much poorer part. ” But Crosby likewise mentioned, “ It is likely that and these plants and creatures he works with him have had this disintegration of more varieties of living shapes at the last four hundred years than the usual processes of evolution might kill off in a million. ”
