What surface feature was created by the glaciers that covered North America?

The Great Lakes were created by the glaciers that covered North America during the last Ice Age. As the glaciers advanced and then retreated, they sculpted the landscape, carving out large depressions in the earth that filled with meltwater. This process was instrumental in forming the Great Lakes, which include Lakes Superior, Michigan, Huron, Erie, and Ontario. The glaciers played a crucial role in shaping these bodies of water by eroding the land and creating the basins that now hold the lakes. Over time, as the glaciers melted, water filled these basins, resulting in the vast freshwater lakes we see today. In contrast, while the Rocky Mountains and the Grand Canyon are significant geological features, their formation processes involved tectonic activity and erosion rather than direct glacial action. The Mississippi River, although it has been impacted by glacial activity, did not originate as a feature created directly by glaciers like the Great Lakes did.