What crops that we use that the a meridians did not?

The Americas did not utilize several key crops that are now staples in many diets around the world. Notably, they did not have access to wheat, rice, or barley, which are foundational grains in many cultures. Instead, indigenous crops like maize (corn), potatoes, and tomatoes were cultivated. The introduction of these new crops to the Old World after the Columbian Exchange transformed agricultural practices globally.