Assiniboia , western region Canada , named after the Assiniboin Indians and the Assiniboine River , was demarcated as a district in three different forms in the 19th and early 20th centuries.
Assiniboia was the official name of the Red River Settlement was created in 1811 by a grant from the Hudson's Bay Company ; It included what is now southern Manitoba and (until 1818) the Red River Valley in what is now North Dakota . In 1836 the company recaptured the region and created the "District of Assiniboia" , the included within a 50-mile area radius of Ft. Garry (on the site of today's Winnipeg , Man.). It was administered by a local governor and council appointed by the Hudson's Bay Company. When Manitoba was incorporated in 1870, the county was incorporated into that province.
In 1882 the Canadian government created another district of Assiniboia as part of the old Northwest Territories . It stretched west from the Manitoba border to the district Alberta and was bounded on the north by the District of Saskatchewan and on the south by the Canada-United States border. In 1905 Assiniboia largely became the new province Saskatchewan incorporated .