The Boeing Company is an American multinational aerospace and defense corporation. Founded in 1916 by William E. Boeing in Seattle, Washington, Boeing has expanded over the years, and merged with McDonnell Douglas in 1997. Its corporate headquarters were moved from Seattle to Chicago, Illinois, in 2001. Boeing is made up of multiple business units, which are Boeing Commercial Airplanes (BCA); Boeing Defense, Space & Security (BDS); Engineering, Operations & Technology; Boeing Capital; and Boeing Shared Services Group. Boeing is among the largest global aircraft manufacturers by revenue, orders and deliveries, and the third largest aerospace and defense contractor in the world based on defense-related revenue. The company is the largest exporter by value in the US, and its stock is a component of the Dow Jones Industrial Average. In March 1910, William E. Boeing bought Heath's shipyard in Seattle on the Duwamish River, which later became his first airplane factory.
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