continued and greatly expanded by the Hudson's Bay Company. The North West Company was unchallenged in the fur trade of the region from 1813 to 1821, when it was merged with the Hudson's Bay Company. During this period the company put into practice the system attempted by the Astorians' Pacific Fur Company. A supply ship arrived each spring at Fort George (Astoria). Fur brigades from the interior of the Columbia and New Caledonia districts would converge on Fort George each spring. Furs were loaded on the ship and supplies carried back to the interior. The ship would then carry the furs to Canton, China, where furs would be exchanged for tea and other goods, which were then carried to Britain, completing a global circuit. Company letters, reports, and personnel were generally conveyed overland along a route between Fort George and Fort William on Lake Superior, making use of Athabasca Pass. Later, under the Hudson's Bay Company, the York Factory Express used this route, reoriented to York Factory on Hudson Bay. The Columbia District under the North West Company was only marginally profitable at best. There were numerous problems at many posts. The only consistently profitable areas were the Kootenay River and Snake River countries. New Caledonia produced many furs, but its remoteness made it costly to operate. Nevertheless, the North West Company succeeded in creating a functional network oriented to the Pacific via the Columbia River. Another important legacy was the construction of Fort Nez Perces on the Columbia River near its confluence with the Snake River. Fort Nez Perces would long remain a strategic site, located at the junction of a variety of trails leading to vastly different regions. The fort became an important center for the procurement of horses, a base for expeditions far to the southeast, and a focal point for fur brigades preparing to journey through the Columbia River Gorge. The shipping of furs to Canton, China, was a financial failure for both the North West Company and, later, the Hudson's Bay Company, in part due to the East India Company's monopoly on British trade in the Far East. Hudson's Bay Company The North West Company was merged with the Hudson's Bay Company in 1821. Operations west of the Rocky Mountains were reorganized and the fur districts of New Caledonia and Columbia were merged in 1827 under the name Columbia Department. The name New Caledonia continued