IntroductionBaltimore, city (1990 pop. 736,014), N central Md., surrounded by but politically independent of Baltimore co., on the Patapsco River estuary, an arm of Chesapeake Bay; inc. 1745. The largest city in the state, it is a commercial and industrial center, a major railhead, and a seaport with extensive anchorages and dock and storage facilities. Coal, grain, and iron, steel, and copper products are exported. Among Baltimore's leading industries are shipbuilding, sugar and food processing, oil refining, biotechnology, and the manufacture of chemicals, steel, copper, clothing, and aerospace equipment.
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