The coordinates 45°N and 80°W correspond to a location near the northeastern part of Lake Huron, specifically in the vicinity of the border between Ontario, Canada, and Michigan, USA. This area is part of the Great Lakes system, which is one of the largest freshwater systems in the world. The specific point may be close to the eastern side of the lake, near areas such as Manitoulin Island.
Lake Huron
Lake Huron
Lake Ontario is the lake in question but the coordinates actually fall in Canada across Lake Ontario from Rochester, New York.
45N and 100E is (Mongolia)
The country of Mongolia is located at 45N 105E.
The city at 45N 76W coordinates is Toronto, Canada.
The city located at 45N and 73W is Montreal, Canada.
The city at 40N 80W is Pittsburgh, Pennsylvania, in the United States.
The coordinates 45N and 10E point to Italy, located in southern Europe.
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The country located at 26N 80W is the Bahamas.
The coordinates 45N 73W correspond to the city of Burlington, Vermont in the United States.