Corn, also known as maize, is a grain plant cultivated for food. The origin of this grain remains unknown, however, many historians believe that corn was first domesticated in Mexico's Tehuacan Valley. Types of corn include sweet corn, popcorn, pod corn, flint corn, flour corn, waxy corn and dent corn.
Corn is one of the most important crops in the United States. Over the last years, the country's corn farmers experienced constant increases in annual revenues. In 2016/17, the U.S. was responsible for more than one-third of the global corn production.
Iowa and Illinois were the top U.S. states based on harvested area of corn for grain in 2016. That year, Iowa's corn for grain production value amounted to approximately 13.5 million acres. In 2016, the United States exported around 56.5 million metric tons of corn, making the nation the world's largest corn exporter. Japan and Mexico were the leading buyers of U.S. corn in 2015, purchasing approximately 12.1 million metric tons and 11.31 million metric tons respectively.