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European powers - and later the United States - quarreled over possession of the region until 1846 when the U.S. and Great Britain finalized division of the region. So the US got Oregon from the British. The border between the United States and British North America was set at the 49th parallel.

The Oregon Territory was officially organized by Congress on August 14, 1848.

Oregon was admitted to the Union on February 14, 1859.

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