Corn (Maize).
For Mexico it was corn (maize). For South America it was the potato.
Olives came from Latin American and became a staple product of Italian cuisine.
There are many staple foods in South America. For example, corn is a fairly common staple food in South American countries.
The staple food for North America is Maize.
picoletE = bolt, staple
It is "Sacacorchetes" or "Sacagrapas"
corn
Maize (corn)
Rice
Maiz. It has been the staple food since ancient times.
Corn was the staple crop of early Indian civilizatons in North and South America.
Staple foods of the United States are corn, wheat, and rice. Staple food of Mexico is corn, it is used in many of the popular dishes in Mexico. Staple foods of Italy are fish, cheese, pork, and corn.