Answer:
Corn.
Explanation:
Corn is a type of grain farming generally occurs in the United States because of its demand to the livestock sector of United States of America. This corn crop is cultivated by farmers on large areas of land in order to fulfill the requirements of the livestock sector. Corn is a cash crop and can be cultivated in different states and regions of United States such as Illinois, Iowa, Indiana, eastern portions of South Dakota and Nebraska, western Kentucky and Ohio.