Answer:
Great Britain was one of the major participants in the Seven Years' War, which in fact lasted nine years, between 1754 and 1763. British involvement in the conflict began in 1754 in what became known as the French and Indian War. However the warfare in the European theater involving countries other than Britain and France commenced in 1756 (hence the name "Seven Years' War"). Britain emerged from the war as the world's leading colonial power, having gained all of New France in North America, ending France's role as a colonial power there. Following Spain's entry in the war in alliance with France in the third Family Compact, Britain captured the major Spanish ports of Havana, Cuba and Manila, in the Philippines in 1762, and agreed to return them in exchange for Florida, previously controlled by Spain. The Treaty of Paris in 1763 formally ended the conflict and Britain established itself as the world's pre-eminent naval power.