Could we trade that angle for like, Vancouver? Seems like a fair deal.Minnesota's Northwest Angle (part of Minnesota that can only be accessed by water from the US or by land through Canada) has a fun back story. It exists due to poor maps and a misunderstanding of the source of the Mississippi River at the time:
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Angle Township was designated as territory of the United States because negotiators of the initial Canada–U.S. border misunderstood the geography of the area. Benjamin Franklin and British representatives relied on the Mitchell Map of colonial American geographer John Mitchell, which did not indicate the source of the Mississippi River—thought to lie some distance to the northwest—or the true shape of Lake of the Woods, which was instead shown as roughly oval. The 1783 Treaty of Paris thus 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 northwesternmost point thereof, and from thence on a due west course to the river Mississippi..."
Northwest Angle - Wikipedia
en.m.wikipedia.org
