Canada, federated country of North America, a member of the Commonwealth of Nations, bounded on the north by the Arctic Ocean; on the north-east by Baffin Bay and Davis Strait, which separate it from Greenland; on the east by the Atlantic Ocean; on the south by the United States; and on the west by the Pacific Ocean and the US state of Alaska. It was formerly known as the Dominion of Canada. Occupying all of North America north of the conterminous United States, except Alaska, Greenland, Saint-Pierre and Miquelon Islands, Canada is the world's second-largest country, surpassed in size only by Russia.
It includes many islands, notably the Canadian Arctic Islands (Arctic Archipelago) in the Arctic Ocean. Among the larger members of this group, which in aggregate area is about 1,424,500 sq km (550,000 sq mi), are (in descending order) Baffin, Victoria, Ellesmere, Banks, Devon, Axel Heiberg, and Melville islands. Cape Columbia, a promontory of Ellesmere Island at latitude 83°06¢ north, is the northernmost point of Canada; its southernmost point is Middle Island in Lake Erie, at latitude 41°41¢ north. The easternmost and westernmost limits are delineated, respectively, by longitude 52°37¢ west, which lies along Cape Spear, Newfoundland, and longitude 141° west, which coincides with part of the Alaska-Yukon border. Canada has a total area of 9,970,610 km (3,849,652 sq mi), of which 755,180 sq km (291,575 sq mi) is covered by bodies of freshwater such as rivers and lakes, including those portions of the Great Lakes under Canadian jurisdiction.…
