Answer:
The Exchange was, Plants, animals, culture, diseases between the old and new world.
Step-by-step explanation:
Originally the Columbian exchange was a process were they would trade biological and cultural things that was between the old world (Eurasia and Africa) and the new world (the Americans) Following the time thay Christopher Columbus was exploring and the time of his arrival.
The new world emmited many things thay would be good for the old world or significant for them like maize, potato's, tomatoes, cacao and etc.
Maize was introduced to Europe by Spanish explorers and also potato's became a very important food source for the adnes region of south America.