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Lewis and Clark Expedition explored Snake and Columbia Rivers; established Fort Clatsop.
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John Jacob Astor's Pacific Fur Company established Fort Astoria, first permanent white settlement in Oregon.
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U.S. and Great Britian agreed to Joint-Occupancy Treaty
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Treaty with Spain set southern boundary of Oregon
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Oregon Territory established
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Oregon became 33rd state
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Chief Joseph's Nez Perce tribes relocated to Colville Reservation