 Most of the remaining areas of what is now the state were purchased in 1803 from France as part of the Louisiana Purchase ( the area west of the Mississippi having been recently acquired by France from Spain ) . Parts of northern Minnesota were considered to be in Rupert 's Land , a large territory owned by Hudson 's Bay Company . The exact definition of the boundary between Minnesota and British North America was not addressed until the Anglo @-@ American Convention of 1818 . 
 Most of the remaining areas of what is now the state <a href='uninflect' title='1'><mark>were</mark></a> purchased in 1803 from France as part of the Louisiana Purchase ( the area west of the Mississippi <a href='been_done' title='2'><mark>having</mark></a> been recently acquired by France from Spain ) . Parts of northern Minnesota <a href='uninflect' title='3'><mark>were</mark></a> considered to be in Rupert <a href='null_genetive' title='4'><mark>'s</mark></a>Land , a large territory owned by Hudson <a href='null_genetive' title='5'><mark>'s</mark></a>Bay Company . The exact definition of the boundary between Minnesota and British North America was not addressed until the Anglo @-@ American Convention of 1818 . 
Most of the remaining areas of what is now the state was copped in 1803 from France as part of the Louisiana Purchase ( da area west of tdaMississippi done been recently acquired by France from Spain ) . Parts of northern Minnesota was considered to be in Rupert  Land , a large territory owned by Hudson  Bay Company . Thdaxact definition of the boundary between Minnesota and British North America was not addressed until thedaglo @-@ American Convention of 1818 .