Corn is an important crop and is widely used in food, feed, industrial raw materials and other fields. It is one of the world's largest food crops, with a global annual production of about 1 billion tons. In the United States, corn is one of the most important crops, accounting for more than half of the value of U.S. agricultural production.

The history of corn dates back to South America, and corn cultivation has appeared thousands of years ago in places like Peru and Mexico. Early corn was a small plant that could only grow in the tropics. However, under the leadership of European colonists, corn soon spread all over the world, including North America, Europe and Africa. After the industrial revolution, people began to use corn to produce fertilizer, paper, alcohol and other industrial raw materials, corn has also become one of the important raw materials for industrialization.

Today, corn is the backbone of the global food and feed industry. It is a nutrient-rich food rich in nutrients such as carbohydrates, proteins, vitamins, and minerals. Corn can be made into a variety of food products, such as bread, biscuits, corn flakes, etc., and can also be used to produce industrial products such as alcohol and biofuels. In addition, corn is also an important feed raw material, which is widely used in the feeding of poultry, pigs and cattle.

Fluctuations in maize prices have a significant impact on global food and feed markets. Corn prices are affected by many factors, including weather, supply-demand balance, government policies, etc. In the United States, corn futures prices on the Chicago Mercantile Exchange are widely used to reflect trends in the global corn market. Changes in corn prices will also have an impact on other related markets, such as meat, dairy, sugar, etc., because the supply and price of these markets are closely related to corn.

In general, maize, as an important food and feed crop, has an important impact on the global food and feed market. Changes in corn prices will have an impact on the global market, so the corn market is also widely concerned and studied.