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The Treaty of Paris, concluded between the United States and Great Britain at the end of the American Revolutionary War, stated that the boundary between U.S. territory and the British possessions to the north would run "...through the Lake of the Woods to the northwestern most point thereof, and from thence on a due west course to the river Mississippi..."

The parties did not suspect that the source of the Mississippi, Lake Itasca (then unknown to European explorers), was south of that point, and that thus the entire Mississippi was too far south to be intersected by a line running west from the Lake of the Woods. A factor in this mistake was the use of the Mitchell Map during the treaty negotiations; that map showed the Mississippi extending far to the north. In the Anglo-American Convention of 1818, the error was corrected by having the boundary run directly from the northwest point of the lake to the49th parallel and then westward along it.

When a survey team led by David Thompson finally located the northwesternmost point of the lake and surveyed this north-south line, it was found to intersect other bays of the lake and therefore form the boundary of a section of U.S. territory to its east, now known as the Northwest Angle

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Q: Why did the Northwest Angle become part of Minnesota instead of Canada?
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What were the French looking for in Canada?

the french were looking for a trade route called the northwest passage but instead the landed in Canada. while there they became business partners with the natives. they became trappers and they created many trading posts. in 1534 Jacques Cartier failed in his search for the northwest passage but he did claim all of Canada for France. This land that he claimed was named new France and would become very wealthy off of beaver furs that Europeans made various types of hats from. i hope this answers your question S.B. peace out


When did Northwest Territories become Territory?

Northwest Territories came into being on the same day that Rupert's Land was transferred from Britain to Canada, and on the same day Manitoba became a province: July 15, 1870.


When did Nunavut become a territory?

as a result of a land settlement between Canada and the aboriginal poeples of Canada!


When did Minnesota become a country?

Minnesota is not a country. Minnesota became a US state on May 11, 1858.


What year did Canada's flag become official?

Well what do you think in the year 1865 canda got its own flag instead if the british flag.


What did Minnesota become in 1849?

Minnesota became a US Territory on March 3, 1849.


When did the Northwest Territory become a province?

it was a territory in 1870


When did Minnesota become a state or part of the union?

Minnesota became a state on may 11, 1858


When did Prince Edward Island become a part of Canada?

prince edward island became part of Canada on July 1st 1873


Was minnesota a territory before it become a state?

It was a territory.


Did the northwest territory eventually become five states?

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1845