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.
Concentration of media ownership the defense resources of the company. As FAIR observed, "when correspondents and paid consultants on NBC television praised the performance of U.S. weapons, they were extolling equipment made by GE, the corporation that pays their salaries." Over time the amount of media merging has increased and the number of media outlets has increased. As a result, fewer companies now own more media outlets, increasing the concentration of ownership. In 1983, 90% of US media was controlled by 50 companies; , 90% was controlled by just 6 companies and in 2017 the number was 5. News Corporation was split into two