Economy of New York City feet (37.2 million m) that same year, is the largest central business district in the world. New York City is distinctive for its high concentrations of advanced service sector firms in the law, accountancy, banking and management consultancy fields. It is the top global center for the advertising industry, which is metonymously called "Madison Avenue". Silicon Alley, metonymous for New York's broad-spectrum high technology sphere, continues to expand. Finance, high technology, real estate, insurance, and health care all form the basis of New York's economy. The city is also the nation's most important center for mass media, journalism, and publishing.
Silicon Prairie park, which is located in Champaign. The National Center for Supercomputing Applications is in Urbana. The Chicago Metropolitan Area is home to several companies in the industrial automation, consumer electronics, telecommunications and online services industries. The Illinois Technology and Research Corridor along Interstate 88 and the Golden Corridor along Interstate 90 have particularly high concentrations of such businesses. Among the Chicago area companies and organizations that comprise the Illinois Silicon Prairie are: An area of the Midwestern United States is often referred to as the Silicon Prairie. This region can loosely be defined as the states bordering along Interstate 29