boundariesWashington
boundariesWashington refers to the established geographic and administrative limits of the state of Washington in the United States. These boundaries define its borders with neighboring states and countries, as well as its internal divisions. To the north, Washington shares a border with Canada, specifically the province of British Columbia. This international border is largely defined by the 49th parallel north. To the east, the state is bordered by Idaho, a boundary primarily determined by the crest of the Bitterroot Mountains in some sections and straight lines in others. To the south, Oregon lies along Washington's southern edge. This border is predominantly marked by the Columbia River. To the west, Washington's boundary is the Pacific Ocean.
Within Washington, these external boundaries delineate the state's jurisdiction and authority. The state is further divided