Why are the Great Lakes Lowlands and the St. Lawrence Lowlands considered a single landform region?

The Great Lakes Lowlands and the St. Lawrence Lowlands are considered a single landform region primarily due to their interconnected water system. This water system includes the Great Lakes, which serve as a significant hydrological feature that influences both regions. The flow of water and the proximity to these lakes facilitate similar ecological and climatic conditions, as well as the movement of transportation and trade routes that are vital for the economic activities in these areas.

While climate conditions, geological characteristics, and fertile soil do play roles in the characteristics of these regions, the defining factor that ties them together as a single landform region is indeed the interconnected water system. This system not only affects the landscapes but also influences the development and sustainability of ecosystems within both the Great Lakes and St. Lawrence Lowlands. Understanding this interconnectedness helps highlight the importance of water resources in shaping geographical regions.