It’s simply convention. Although the Straits of Mackinac are 5 miles wide at the narrowest point, in relation to the size of the lakes it makes a significant demarcation. Sort of like the Straits of Gibraltar and the Atlantic Ocean and Mediterranean Sea.
Interesting. So why exactly is a distinction made? Some political reason from the past?
It’s simply convention. Although the Straits of Mackinac are 5 miles wide at the narrowest point, in relation to the size of the lakes it makes a significant demarcation. Sort of like the Straits of Gibraltar and the Atlantic Ocean and Mediterranean Sea.