"... corn is the plant of the Americas; it is native to the New World, and corn, more than any other plant, feeds the Americas. At the time of Columbus, corn was cultivated from in Canada to Chile in South America, mostly on forested land that could be cleared by slash-and-burn agriculture followed by several years of fallow. The that replaced the tall grassland of the midcentral United States is a recently developed (ca. 150 years) corn-producing region with its own landrace, . The United States produces 40% of the world's corn harvest, and it takes 25 corn plants per person per day to support the American way of life. This plant is found in more than the on the breakfast table. is in the margarine, corn syrup sweeteners in the marmalade, corn syrup solids in the instant nondairy coffee creamer, and corn was fed to the cows that made the milk, the chickens that laid the eggs, and the pigs that produced the bacon."