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| | Canada |
 | | The largest region, designated either as the Canadian Shield or the Laurentian Plateau, extends from Labrador to Great Bear Lake, from the Arctic Ocean to the Thousand Islands in the Saint Lawrence River, and into the United States west of Lake Superior and into northern New York. |
 | | This region of ancient granite rock, sparsely covered with soil and deeply eroded by glacial action, comprises all of Labrador (the easternmost part of the mainland, which is part of the province of Newfoundland), most of Québec, northern Ontario, Manitoba, and most of the Northwest Territories, with Hudson Bay in the center. |
 | | To the west of the Canadian Rockies is a region occupied by numerous isolated ranges, notably the Cariboo, Stikine, and Selkirk mountains, and a vast plateau region. |
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