Columbia, the Northwest Territories and Yukon. Columbia Territory. The part of modern-day British Columbia and Yukon west of the Rocky Mountains. See also Annexationist movements of Canada Continentalism Expansionism Fenian Raids Hunter Patriots Manifest Destiny Oregon boundary dispute Notes References Fred H. Harrington. Fighting Politician: Major General N. P. Banks (Philadelphia, 1948), pp 178–79. Donald Frederic Warner; The Idea of Continental Union: Agitation for the Annexation of Canada to the United States, 1849-1893 University of Kentucky Press. 1960. External links Actual text, from United States Library of Congress Text of the bill, from Collections Canada 1866 in American law Canada–United States relations Political history of Canada United States proposed federal legislation Proposed states and territories of the United States 1866 in international relations Annexation