Which of the following crops was introduced to Europe from the Americas?

The introduction of maize, commonly known as corn, from the Americas to Europe had a significant impact on agriculture and diets in the Old World. Maize was one of the many crops that thrived in the Americas before the arrival of Europeans. Following the Columbian Exchange, it spread rapidly across Europe, where it adapted well to various climates and quickly became a staple food in several regions, especially in southern and eastern Europe.

Maize's ability to yield large quantities made it an attractive crop for European farmers, contributing to population growth and changes in agricultural practices. The crop's versatility and high energy content helped in the diversification of diets and improved food security in Europe. This contrasts with the other crops listed, such as wheat, rice, and barley, which were already well-established in Europe prior to the Columbian Exchange and were not introduced from the Americas. Thus, maize stands out as a key agricultural introduction from the New World that transformed Old World farming and consumption patterns.