Which region is associated with crops such as corn and potatoes, as well as horses and syphilis?

• A. Africa
• B. Europe
• C. Americas
• D. Asia

Answer: (C)

Columbian Exchange is the idea at play: after 1492, crops, animals, and diseases moved between the Americas and the rest of the world, reshaping diets, ecosystems, and health. Corn and potatoes originated in the Americas—maize in Mesoamerica and potatoes in the Andes—and later spread worldwide as crucial staples. Horses, once native to North America, disappeared there but were reintroduced by Europeans, transforming transport and warfare across both continents. Syphilis is commonly linked to these exchanges, with origins tied to the contact between the Old and New Worlds and later spreading to Europe. With all these components connected through the exchange between the Americas and other regions, the Americas is the region associated with them.