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because it can easily grown in temperate areas.
africa and south sfrica and england although all of these countries have more than one staple, hope this helps?
Wheat.
wheat
Some of the crop staple food in Pakistan is wheat, rice, corn, and a lot more.
Rice and fish were staple foods of the Indus Valley civilization.
It is only natural that your diet will consist of what is most commonly grown in your region. Rice is staple food for most people in South India and certain coastal areas. However, wheat is predominantly grown in northern parts of India and hence wheat forms the staple food for North Indians.
The staple food of Peru contains three main elements. These are corn, chilli peppers and potatoes. Rice, meats and wheat were introduced by the Spanish.
I would say, rice, followed by wheat and soy beans.
Rice, Wheat, dal, red meat and chicken and lentils and vegetables are the staple food for Indians
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.
Wheat, jowar and maize constitute the staple diet of the people of Chhattisgarh. To seek more information about crrops of different places in Chhattisgarh