| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| Bitterroot, river, United States |
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| river, c.120 mi (190 km) long, rising in SW Mont. and flowing north to join the Clark Fork River near Missoula. A Roman Catholic mission was established on the river in 1841, and missionaries are credited with introducing farming in the area. The Bitterroot Valley experienced rapid population growth in the 1990s. |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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