Final answer:
Continental glaciers covered North America during the Pleistocene, reaching as far south as major U.S. cities.
Explanation:
Continental glaciers covered a significant portion of North America during the Pleistocene, with the Laurentide Ice Sheet extending from Canada into the United States, reaching as far south as New York City, Chicago, and Seattle. The Midwestern states like Minnesota, Iowa, Wisconsin, Illinois, and Michigan were fully covered by glaciers, which carved out numerous lakes as they retreated.
Learn more about continental glaciers in North America here:
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