Cabbage, a common staple vegetable, is found throughout the world. It's descended from Brassica oleracea, a plant species that includes many cultivars. Cultivars include roses, daffodils, azaleas, as well as the vast majority of the world's agricultural food crops. Brassica oleracea originally grew wild in England and continental Europe. Cabbage was probably domesticated before 1000 BC. By the Middle Ages, it had become a prominent part of European cuisine.

Potatoes, tomatoes, and corn were all developed in the New World. They were part of the Columbian exchange and carried back to Europe. Potatoes were first cultivated by the indigenous people in southern Mexico. The potato is tuberous and was developed from a perennial nightshade, Solanum tuberous. Tomatoes also developed from the nightshade family, Solanaceae. They were first cultivated in western South America. Corn, or maize, a world staple food grain, was developed in southern Mexico. It had been domesticated as far back as 9000 BC and spread throughout the Americas. By A.D.900, indigenous natives were clearing forests and grasslands to cultivate the crop on a mass scale.

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