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 Wadi 2010, more than 35,000 personnel were employed in multinationals research and development centers across Israel. In recent years, East Asian multinationals and investors, especially from Mainland China, have actively invested and opened up offices in Israel, including Chinese technology giants such as Alibaba, Baidu, Tencent and Kuang-Chi. Around 60 foreign R&D centers are engaged in a diverse range of activities including biotechnology, chemicals, industrial machinery, communication equipment, scientific instruments, medical devices, flash memory storage equipment, computer hardware components, software, semiconductors and internet. Silicon Wadi Silicon Wadi (, lit: "Silicon Valley") is an area with a high concentration of high-technology companies