Under the Treaty of 1818, the Great Britain and the United States of America both claimed rights to the Oregon Country. This contentious dispute for ownership of the land was ended by the Oregon Treaty of 1846. The boundary between British North America and the United States was extended to the Pacific Ocean on the 49th Parallel, with all of Vancouver Island considered British. During the gold rushes of the 1850s and 1860s, Fort Colvile in 1860 especially became an important centre for mining activity and supplies. Abandoned in June 1871, some buildings stood until they burned July 6, 1910.