History of Saskatchewan encompasses the stuy of past human events and activities of the province of Saskatchewan, the middle of Canada's three prairie provinces. Archaeological studies give some clues as to the history and lifestyles of the Palaeo-Indian, Taltheilei, and Shield Archaic Traditions who were the first occupants of the prehistoric era of this geographical area. They evolved into the history of the first nations people who kept their history alive in oral tradition. The first nations tribes that were a part of this area were the Chipewyan, Cree, Saulteaux, Assiniboine, Atsina and Sioux.Henry Kelsey (1667-1724), was not native to this area, and arrived 1690. Other European explorers also soon arrived followed by fur traders such as The Governor and Company of Adventurers of England trading into Hudson's Bay and North West Company. Clifford Sifton, Minister of the Interior in charge of immigration, (1896 - 1905) enduced a variety of agriculturally inclined European emigrants to Canada to settle prairie land around the transcontinental railway. The political boundaries of this area have changed several times evolving through Rupert's Land, Provisional Districts of the North West Territories, and finally a province. Saskatchewan has been a province of Canada since 1905.