Because it is the longest river.
Mackenzie
The river located between the Great Lakes and the Gulf of St. Lawrence is the St. Lawrence River. The St. Lawrence River is a waterway linking Canada and the United States.
in Canada.
The Saint Lawrence River forms the boundary between Ontario, Canada, and New York State.
St. Lawrence River, Canada, nothing big...
canada
Here are two. You can choose one. The Mackenzie river, in the Northwest, or the St. Lawrence river, which flows through Ontario and Quebec.
There are many famous rivers in Canada. Some of these include the Saint Lawrence River, the Yukon River, and the Colombia River.
St..Lawrence River
It is the bodies of water surround the area
The Columbia River and the St. Lawrence River
in eastern Canada in QuebecAnswerIn South Eastern Canada