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61 hills of the Rocky Mountains. In the south- teaus, which are drained by the Columb ern part of the region, the terrain is rolling and Kootenay rivers, are interrupted by a with scattered hills, except in the vicinity of series of north-south mountain ranges. The Winnipeg, where the land is flat. From intervening valleys, especially the Okanagan northern Alberta to the Beaufort Sea, the Valley, are important vegetable- and fruit- north-sloping land is low and more nearly producing areas. Throughout most of this level, with many lakes and swamps. The In- section, however, cattle and sheep ranching terior Plains Region is drained by the Red, is the chief occupation. The Yukon River Assiniboine, and Saskatchewan rivers, which drains the sparsely inhabited northern pla- flow to the east, and by the northward-flowing teaus, where small-scale farming is practiced. Mackenzie River system, which includes the The interior plateau area is bordered on the Peace, Athabaska, and Slave rivers, as well as west by the Coastal Ranges, which extend Athabaska, Slave, and Great Bear lakes. about 1,000 miles from north to south and are The southern part of the region is one of 50 to 100 miles wide. From elevations of 4,000 the largest wheat-producing areas in the to over 10,000 feet, these mountains slope world. The flat to rolling land, fertile soils, abruptly to the Pacific Ocean. The coast is and summer rainfall favor the large-scale indented by many fiords and is separated from production of spring wheat. Vegetables are a chain of offshore islands by a narrow chan- grown chiefly to supply the needs of the wheat nel that provides an inland water route to farmers. Bordering the Wheat Belt on the Alaska. The Coastal Ranges are crossed by north is a mixed farming area where dairying only a few rivers the most important of which predominates. The dairy and garden prod- are the Fraser and the Skeena. The Fraser ucts are consumed primarily within the In- Valley and the lowlands of the coastal islands terior Plains Region. In the foothills of the are areas of mixed farming and dairying. Rockies where the climate is too dry for crop Lumbering predominates on slopes too production, cattle and sheep ranches predom- steep for agriculture, particularly near the inate. coast where ocean transportation is cheap The most important mineral resources of and the growth of trees is rapid because of the Interior Plains Region are petroleum in mild climate and heavy rainfall. Along the Alberta and coal in Alberta and Saskatche- coast, fishing is an important industry. Sal- wan. Valuable deposits of uranium and mon is the most important fish commercially. radium have been found on the shores of f. Arctic Archipelago. Great Bear Lake in the District of Mackenzie. In general, the terrain of the treeless e. Cordilleran Region. islands that comprise the Arctic Archipelago The Cordilleran Region of western Canada is rolling plains and hills. The eastern sec- extends from the border of the United States tion of Baffin, Devon, and Ellesmere Islands, north to the Beaufort Sea and includes however, is mountainous, with an average ele- southwestern Alberta, British Columbia, and vation of 5,000 to 7,000 feet on Baffin Island. the Yukon Territory. This region, which is Some of the mountain peaks are covered by about 400 miles wide and 1,500 miles long, is permanent snow. Most of the Arctic Archi- divided into three parts: the Rocky Moun- pelago is uninhabited and much of it has not tains, the interior plateaus, and the Coastal been explored. The Archipelago and some of Ranges. The Rocky Mountains rise west of the islands in Hudson Bay are inhabited only the Interior Plains and form a chain of high by Eskimos, who live on the meat of native peaks with elevations of 6,000 feet or more. animals and a few products brought in by The Peace and Athabaska rivers, which drain fur traders. northward, have their sources in the Rockies. Westward, the Rockies slope gradually into 3. Climate. the interior plateaus of British Columbia and a. General. the Yukon Territory, which have elevations of The climates of Canada vary from the hu- 3,000 to 4,000 feet. To the south, the pla- mid marine climate of western British Colum-

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    "ocrText": "61\nhills of the Rocky Mountains. In the south-\nteaus, which are drained by the Columb\nern part of the region, the terrain is rolling\nand Kootenay rivers, are interrupted by a\nwith scattered hills, except in the vicinity of\nseries of north-south mountain ranges. The\nWinnipeg, where the land is flat. From\nintervening valleys, especially the Okanagan\nnorthern Alberta to the Beaufort Sea, the\nValley, are important vegetable- and fruit-\nnorth-sloping land is low and more nearly\nproducing areas. Throughout most of this\nlevel, with many lakes and swamps. The In-\nsection, however, cattle and sheep ranching\nterior Plains Region is drained by the Red,\nis the chief occupation. The Yukon River\nAssiniboine, and Saskatchewan rivers, which\ndrains the sparsely inhabited northern pla-\nflow to the east, and by the northward-flowing\nteaus, where small-scale farming is practiced.\nMackenzie River system, which includes the\nThe interior plateau area is bordered on the\nPeace, Athabaska, and Slave rivers, as well as\nwest by the Coastal Ranges, which extend\nAthabaska, Slave, and Great Bear lakes.\nabout 1,000 miles from north to south and are\nThe southern part of the region is one of\n50 to 100 miles wide. From elevations of 4,000\nthe largest wheat-producing areas in the\nto over 10,000 feet, these mountains slope\nworld. The flat to rolling land, fertile soils,\nabruptly to the Pacific Ocean. The coast is\nand summer rainfall favor the large-scale\nindented by many fiords and is separated from\nproduction of spring wheat. Vegetables are\na chain of offshore islands by a narrow chan-\ngrown chiefly to supply the needs of the wheat\nnel that provides an inland water route to\nfarmers. Bordering the Wheat Belt on the\nAlaska. The Coastal Ranges are crossed by\nnorth is a mixed farming area where dairying\nonly a few rivers the most important of which\npredominates. The dairy and garden prod-\nare the Fraser and the Skeena. The Fraser\nucts are consumed primarily within the In-\nValley and the lowlands of the coastal islands\nterior Plains Region. In the foothills of the\nare areas of mixed farming and dairying.\nRockies where the climate is too dry for crop\nLumbering predominates on slopes too\nproduction, cattle and sheep ranches predom-\nsteep for agriculture, particularly near the\ninate.\ncoast where ocean transportation is cheap\nThe most important mineral resources of\nand the growth of trees is rapid because of\nthe Interior Plains Region are petroleum in\nmild climate and heavy rainfall. Along the\nAlberta and coal in Alberta and Saskatche-\ncoast, fishing is an important industry. Sal-\nwan. Valuable deposits of uranium and\nmon is the most important fish commercially.\nradium have been found on the shores of\nf. Arctic Archipelago.\nGreat Bear Lake in the District of Mackenzie.\nIn general, the terrain of the treeless\ne. Cordilleran Region.\nislands that comprise the Arctic Archipelago\nThe Cordilleran Region of western Canada\nis rolling plains and hills. The eastern sec-\nextends from the border of the United States\ntion of Baffin, Devon, and Ellesmere Islands,\nnorth to the Beaufort Sea and includes\nhowever, is mountainous, with an average ele-\nsouthwestern Alberta, British Columbia, and\nvation of 5,000 to 7,000 feet on Baffin Island.\nthe Yukon Territory. This region, which is\nSome of the mountain peaks are covered by\nabout 400 miles wide and 1,500 miles long, is\npermanent snow. Most of the Arctic Archi-\ndivided into three parts: the Rocky Moun-\npelago is uninhabited and much of it has not\ntains, the interior plateaus, and the Coastal\nbeen explored. The Archipelago and some of\nRanges. The Rocky Mountains rise west of\nthe islands in Hudson Bay are inhabited only\nthe Interior Plains and form a chain of high\nby Eskimos, who live on the meat of native\npeaks with elevations of 6,000 feet or more.\nanimals and a few products brought in by\nThe Peace and Athabaska rivers, which drain\nfur traders.\nnorthward, have their sources in the Rockies.\nWestward, the Rockies slope gradually into\n3. Climate.\nthe interior plateaus of British Columbia and\na. General.\nthe Yukon Territory, which have elevations of\nThe climates of Canada vary from the hu-\n3,000 to 4,000 feet. To the south, the pla-\nmid marine climate of western British Colum-"
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