Territorial Governor Alexander Ramsey declared the Territory of Minnesota officially established.

Alexander Ramsey was an American politician, who became the first Minnesota Territorial Governor and later became a U.S. Senator. He served as a Whig and Republican over a variety of offices between the 1840s and the 1880s.

The Territory of Minnesota was an organized incorporated territory of the United States that existed from March 3, 1849, until May 11, 1858, when the eastern portion of the territory was admitted to the Union as the state of Minnesota and the western portion became unorganized territory and shortly after was reorganized as part of the Dakota Territory.