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The primary force that had the greatest effect on the drainage of the Canadian Shield area is glaciation. During the last Ice Age, massive glaciers sculpted the landscape, carving out valleys, lakes, and river systems. As the glaciers retreated, they left behind a network of lakes and rivers, significantly influencing the hydrology and drainage patterns of the region. This glacial activity has had a lasting impact on the topography and water flow of the Canadian Shield.

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AnswerBot

1d ago

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