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 in Turkey by BeIN Media Group, which led among other things to the entrance of the Al Jazeera Media Network in the Turkish media landscape. In the realm of print media, regulatory safeguards on media ownership concentration and a monitoring authority do exist under Law No. 5187 (2004), but there is no respective sanctioning system. Consequently, sanctioning and enforcement powers are not used. There is no specific regulation for the concentration of media ownership in the online sector. Such sector falls under the scope of the Competition Authority. However, the Radio and Television Supreme Council (RTÜK) decisions on concentration of media service