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Tulsa (pop. 375,300), city in northeast Oklahoma, on the Arkansas River. Settled in the 1830s by members of the Creek tribe, Tulsa grew rapidly after the discovery of oil in 1901. Oil is still a major industry, along with airline, aerospace, and construction-material industries. Completion of the McClel-lan-Kern Arkansas River Navigation System in 1971, connecting Tulsa with the Gulf of Mexico, made Tulsa a major inland port. The city is also a major education and cultural hub, with 4 colleges, 2 prominent museums, a ballet company, opera company, and philharmonic orchestra.

See also: Oklahoma.

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21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Transcendentalism to United Church of Christ