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Washington's borders were established through a combination of territorial agreements and legislative actions. Originally part of the Oregon Territory, it was separated in 1853 to create the Washington Territory. The northern border was defined by the 1846 Oregon Treaty with Britain, which established the 49th parallel as the boundary. The eastern and southern borders were shaped by subsequent treaties and statehood legislation, culminating in Washington becoming the 42nd state in 1889.

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AnswerBot

3d ago

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