French Louisiana French Louisiana The term French Louisiana refers to two distinct regions: Each term has been in use for many years. Colonial French Louisiana was a part of New France. Beginning in 1682 this region, known in French as "la Louisiane française", functioned as an administrative district of New France. It extended from the Gulf of Mexico to Vincennes, now in Indiana. France ceded the region to Spain and Britain in 1763 after the French and Indian War, regained it by treaty in 1800, and sold it to the United States in 1803 through the Louisiana Purchase. Greater New Orleans and
French people in Nebraska as present-day Illinois. Trappers and traders established relationships with Native American tribes at major points around the Great Lakes and along the Mississippi and Missouri rivers. In the Treaty of Fontainebleau in 1762, France ceded its lands west of the Mississippi River to Spain. In 1794 a French trapper named Jean-Baptiste Truteau established a trading post 30 miles up the Niobrara River. The next year, in 1795, Jacques D'Eglise traveled the Missouri River Valley on behalf of the Spanish crown. Searching for the elusive Northwest Passage, D'Eglise did not go any further than central North Dakota. In 1803 the United