City (1990 pop. 144,864), Macomb co., SE Mich., a suburb of Detroit
est. 1837, inc. as a city 1957. It is an important metalworking center where steel is processed. There is tool and die making and the production of automobile parts, although the auto industry has suffered since the late 1970s. Warren's vast Detroit Arsenal, which made military vehicles, closed in 1996. The U.S. Army TACOM Life Cycle Management Command is headquartered in Warren, and the large General Motors Technical Center is also there.
2 City (1990 pop. 50,793), seat of Trumbull co., NE Ohio, in the fertile Mahoning valley settled 1799, inc. as a city 1905. An early coal center, Warren's industries have greatly diversified. Steel, metal-forming machinery, electrical equipment, lamps, and automobile and truck parts are the principal manufactures. The Trumbull campus of Kent State Univ. is in the city.
3 Borough (1990 pop. 11,122), seat of Warren co., NE Pa., on the Allegheny River laid out c.1795, inc. 1832. An early lumbering center, Warren is in wooded country near oil and natural gas reserves. There is agriculture (grain, livestock, and dairying), food processing, and the manufacture of metal and plastic products, transportation and electronic equipment, and machinery. The headquarters of Allegheny National Forest are there. Nearby are Edinboro Univ. of Pennsylvania and a Native American reservation.
4 Town (1990 pop. 11,385), Bristol co., E R.I., a suburb of Providence on the Kickemuit River and Narragansett Bay established as an English trading post in 1632, inc. 1747. An early whaling, shipbuilding, and textile center, it is now an industrial and resort town. Manufactures include automobile equipment, clothing, plastics, and luggage. Many fine old houses and churches survive. Warren was transferred from Massachusetts to Rhode Island in 1746. Brown Univ. was first chartered there (1764) as Rhode Island College. During the American Revolution, Warren was burned (1778) by the British.
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