An effect of the columbian exchange on both africa and europe

Improved diets from new food sources

Explanation:

One of the main consequences of the great maritime navigations of the fifteenth and sixteenth centuries was the creation of a large world market for the exchange of various goods produced in various places on the planet.  The process of creating this market, which began with the arrival of Christopher Columbus in America, had consequences other than trade. In the biological aspect, the trips made after the Columbus achievement significantly changed eating habits, agricultural production, use of geographical spaces and also people's health.

In terms of food, the Colombian exchange allowed the sending of cultivated vegetables originating in America to be produced in Europe, Asia and Africa. This has altered the eating habits of the populations of these regions, creating in many cases a food stability, providing new foods to be cultivated and consumed by these populations, whose efforts for their production could be smaller.

the correct answer is d