Answer:
Since European settlement began in the region the trading outposts have evolved into industrialized cities because of the products that can be transported along the seaway.
Explanation:
The Great Lakes-St. Lawrence Seaway extends 3,700 km or 2,340 miles from the Atlantic Ocean as a deep draft waterway down the St. Lawrence River in Quebec and extending to the Great Lakes. The St. Lawrence Seaway portion of the System extends from Montreal to mid-Lake Erie. The system has a total of 15 locks to help move large cargo vessels down the seaway. It helped greatly with the industrialization of the cities along the great lakes as steel, limestone, and cement was more transportable by water. Also, it helps to ship products like grain out for export.
