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Manhattan is the most densely populated and smallest in area of the five boroughs of New York City. Manhattan is a major commercial, economic, and cultural center of the United States. Anchored by Wall Street in Lower Manhattan, New York City functions as the financial capital of the world, with an estimated GDP of over $1.2 trillion, and is home of both the New York Stock Exchange and NASDAQ. Many multinational media conglomerates are based in the borough.