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History of the St. Lawrence Seaway

The St. Lawrence Seaway is the system of locks, canals, and channels that permits ocean-going vessels to travel from the Atlantic Ocean to the Great Lakes, including the St. Lawrence River which follows from Lake Ontario to the Atlantic Ocean. Beginning in the 1890s, the first proposals for a binational U.S. and Canadian comprehensive deep waterway along the St. Lawrence River were developed. Since its inception and continuing today, the Seaway has remained invaluable for American and Canadian trade.