The territorial era of Minnesota lasted from the Louisiana Purchase in 1803 to Minnesota's achieving statehood in 1858. The Minnesota Territory itself was formed only in 1849 but the area had a rich history well before this. Though there was a long history of European presence in the area before 19th century, it was during the 19th century that the United States began to establish a firm presence in what would become Minnesota.

Grand Portage National Monument is a United States National Monument located on the north shore of Lake Superior in northeastern Minnesota that preserves a vital center of fur trade activity and Anishinaabeg Ojibwe heritage. The area became one of the British Empire's four main fur trading centers in North America, along with Fort Niagara, Fort Detroit, and Michilimackinac.