Maize

Maize (also called corn ormealies) was the staple grain of the Aztec empire. Maize has been domesticated for thousands of years, and it likely first came into common use in Mexico, spreading to the rest of the world from there. Mexico is still one of the world's top maize growing countries. Corn could be ground into flour and used to make tortillas (a sort of flat bread, sometimes used to wrap a filling to make tacos), tamales and even drinks. Corn has transformed the world perhaps more than any other food. Today it's used not only in food, including candy and of course feeding the cattle that is eaten, it's even used in things like sticky tape and making boxes.