Where and when did the Columbian exchange start?

The Columbian Exchange began in the late 15th century, shortly after Christopher Columbus's voyages to the Americas in 1492. It primarily took place between Europe, Africa, and the Americas, facilitating the transfer of plants, animals, diseases, and cultures across these continents. This exchange significantly impacted societies and ecosystems on both sides of the Atlantic, leading to profound changes in agriculture, diet, and population dynamics.