What was the key to the Columbian exchange?

Answer 1

The key to the Columbian Exchange was the extensive transfer of plants, animals, people, culture, and diseases between the Americas and the Old World following Christopher Columbus's voyages in the late 15th century. This exchange dramatically altered agricultural practices, diets, and populations on both sides of the Atlantic, introducing new staple crops like potatoes and maize to Europe while bringing livestock and diseases like smallpox to the Americas. The resulting demographic and ecological shifts had profound and lasting impacts on global history.