The 1763 Treaty of Paris, which ended the Seven Years' War after France's defeat by Britain, resulted in France ceding its territories east of the Mississippi to Britain. Great Britain came into undisputed control of the region between the Chattahoochee and the Mississippi rivers, in terms of other European powers. Of course it had not consulted with any of the numerous indigenous peoples whom it nominally "ruled." The portion of Alabama below the 31st parallel was considered a part of British West Florida. The British Crown defined the portion north of this line as part of the "Illinois Country"; the area west of the Appalachian Mountains was to be reserved for use by Native American tribes. European-American settlers were not supposed to encroach in that territory, but they soon did. In 1767, Britain expanded the province of West Florida northward to 32°28'N latitude.