 Nyorai kupfuurira kweiyi ndima - Iyi yaimbova musha mumwe chete, wakagadzwa nguva pfupi mushure mekunge Chibvumirano cheParis 1783 chakaronga kuti 450N ive muganho wekuchamhembe kweVermont, asi nguva refu vasati vaongorora nzvimbo yemuganhu. Sangano reInternational Boundary Commission rokutanga raiva nebasa rokuongorora uye kugadzira mepu yemuganhu rakanga riri chisikwa chezvibvumirano zvakazotevera. Kuongorora kwayo, kwakapedzwa munhambo yapashure pa 1812, rakapotsa mutsetse we450N nekero kubva pakiromita kusvika kumakiromita kuburikidza nechikamu chikuru chenzvimbo iyi, ichiparadzanisa musha muzviviri panzvimbo pekuisa zvakanyanya muCanada. 