Nebraska is located in the Great Plains region of the United States, with rich soil that has rendered agriculture as the cornerstone of its economy for many decades. Corn production constitutes the largest portion of the agricultural sector, giving rise to the “cornhusker” nickname for Nebraskans. Corn producers in the state are counting on increased use of corn for ethanol production, which accounts for a growing percentage of the state’s crop. Nebraska’s strength in agricultural industries is complemented by a fast-growing manufacturing sector. Food processing, farming equipment, chemicals, and instruments are top manufactured products coming out of the state. Transportation is another key industry in Nebraska, which is home to the world’s largest train yard. Berkshire Hathaway, the conglomerate holding company run for many years by Warren Buffett, has its headquarters in the city of Omaha.