The Treaty of Paris in 1763 was significant as it ended the Seven Years' War, marking a major shift in colonial power dynamics between Britain and France. France ceded Canada and lands east of the Mississippi River to Britain, while Spain, an ally of France, ceded Florida in exchange for the return of Havana, Cuba. The treaty significantly expanded British territorial claims in North America, setting the stage for future conflicts and tensions, particularly around the management of these newly acquired lands and relations with Indigenous peoples. This shift in power contributed directly to the growing dissatisfaction that led to the American Revolution.