Columbia District

Columbia
Columbia
Fur trading district
	Map of the Oregon Country "jointly occupied" by the United States and the United Kingdom; the Columbia Department at its greatest extent included areas far to the north and to the south.
Country	British North America

Map of the Columbia River and its tributaries showing modern political boundaries. In 1811 David Thompson was the first European to journey the entire length of the Columbia.

The Columbia District was a fur trading district in the Pacific Northwest region of British North America in the 19th century. Much of its territory overlapped with the disputed Oregon Country. It was explored by the North West Company between 1793 and 1811, and established as an operating fur district around 1810. The North West Company was absorbed into the Hudson's Bay Company in 1821 under which the Columbia District became known as the Columbia Department. The Oregon Treaty of 1846 marked the effective end of the Hudson's Bay Company's Columbia Department.