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Merck & Co., is one of the largest pharmaceutical companies in the world. Merck headquarters is located in Whitehouse Station, New Jersey. The company was established in 1891 as the United States subsidiary of the German company now known as Merck KGaA. Merck & Co. was confiscated by the US government during World War I and subsequently established as an independent American company. It is currently one of the world's seven largest pharmaceutical companies by market capitalization and revenue. The company describes itself as "a global research-driven pharmaceutical company" that "discovers, develops, manufactures and markets a broad range of innovative products to improve human and animal health, directly and through its joint ventures".