<Li> Article I secured fishing rights along Newfoundland and Labrador for the U.S. </Li> <Li> Article II set the boundary between British North America and the United States along "a line drawn from the most northwestern point of the Lake of the Woods, (due south, then) along the 49th parallel of north latitude ..." to the "Stony Mountains" (now known as the Rocky Mountains). Britain ceded the part of Rupert's Land and Red River Colony south of the 49th parallel (including the Red River Basin--which now forms parts of Minnesota, North Dakota, and South Dakota--as well as a small piece of modern - day Montana near Triple Divide Peak). The United States ceded the small portion of the Louisiana Purchase that lay north of the 49th parallel (namely, parts of the Milk River, Poplar River, and Big Muddy Creek watersheds in modern - day Alberta and Saskatchewan). <Ul> <Li> This article settled a boundary dispute caused by ignorance of actual geography in the boundary agreed to in the 1783 Treaty of Paris that ended the American Revolutionary War . That earlier treaty had placed the boundary between the United States and British possessions to the north along a line going westward from the Lake of the Woods to the Mississippi River . The parties had failed to realize that the river did not extend that far north, so such a line would never meet the river . In fixing this problem, the 1818 treaty inadvertently created an exclave of the United States, the Northwest Angle, which is the small section of the present state of Minnesota that is the only part of the United States outside Alaska north of the 49th parallel . </Li> </Ul> </Li> <Ul> <Li> This article settled a boundary dispute caused by ignorance of actual geography in the boundary agreed to in the 1783 Treaty of Paris that ended the American Revolutionary War . That earlier treaty had placed the boundary between the United States and British possessions to the north along a line going westward from the Lake of the Woods to the Mississippi River . The parties had failed to realize that the river did not extend that far north, so such a line would never meet the river . In fixing this problem, the 1818 treaty inadvertently created an exclave of the United States, the Northwest Angle, which is the small section of the present state of Minnesota that is the only part of the United States outside Alaska north of the 49th parallel . </Li> </Ul> <Li> This article settled a boundary dispute caused by ignorance of actual geography in the boundary agreed to in the 1783 Treaty of Paris that ended the American Revolutionary War . That earlier treaty had placed the boundary between the United States and British possessions to the north along a line going westward from the Lake of the Woods to the Mississippi River . The parties had failed to realize that the river did not extend that far north, so such a line would never meet the river . In fixing this problem, the 1818 treaty inadvertently created an exclave of the United States, the Northwest Angle, which is the small section of the present state of Minnesota that is the only part of the United States outside Alaska north of the 49th parallel . </Li>

The convention of 1818 established all of the following territorial boundaries except which