New France
In 1763, France had ceded the rest of New France, except the islands of Saint Pierre and Miquelon, to Great Britain and Spain at the Treaty of Paris, which ended the Seven Years' War (known as the French and Indian War in North America and especially the United States). Britain received Canada, Acadia, and the parts of French Louisiana which lay east of the Mississippi Riverexcept for the Île d'Orléans, which was granted to Spain, along with the territory to the westthe larger portion of Louisiana.
United Kingdom–United States relations
The French and Indian War, fought between 1754 and 1763, was the North American theatre of the Seven Years' War. The conflict, the fourth such colonial war between France and Britain in North America, resulted in the British acquisition of New France, with its French Catholic population. Under the Treaty of Paris signed in 1763, the French ceded control of French Louisiana east of the Mississippi River to the British, which became known as the Indian Reserve.