The Seven Years' War (1754-1763), also known as the War of the Conquest in four continents, was a world war and among the first truly global armed military conflicts, between several nations in Europe, most notably Great Britain and France, and their colonies. Other belligerents included Portugal, Spain, Russia, Prussia, Austria, the Holy Roman Empire, and several Iroquois tribes in North America, as part of the war’s more local conflict. It also occured in the Mediterranean Sea, several Europen trenches, rival African colonies and the east Asian colonies, including the Middle East, India and the East Indies.
The war began in 1754 as the result of shifting political borders and alliances in Europe, coupled with the efforts of several nations to secure lands beyond Britain's Thirteen Colonies. The war didn't begin on an international scale until 1756 and ended in 1763 and is where the conflict gets its name, even though it technically lasted for nine years. Fighting soon broke out both in Europe and in and around North America; theaters ranged from Canada to the West Indies and from the eastern Atlantic coast to the Russian city of Moscow. The infamous French and Indian War was part of the conflict, specifically the North American theater, where France allied with native Iroquois tribes to stop the British advance westward. In Europe, the war was largely fought with sieges and arson along with several open battles. 
Several key historical figures were involved in the war, including the future President of the United States, George Washington; the Templars Haytham Kenway, Edward Braddock, William Johnson, John Pitcairn, and Charles Lee also participated in the conflict, several of them earning reputation, influence, and power from their involvement. The Assassin-turned-Templar Shay Cormac was also active during the war, as was the French Assassin and soldier Pierre Bellec. By the war's end, the Assassin–Templar War had intensified dramatically, and the Colonial Rite of the Templar Order had all but destroyed the Colonial Assassins.
The war officially ended with the Treaty of Paris in 1763, granting the victorious Great Britain and her allies several holdings throughout the Americas. Spain also emerged a victor, and was given French Louisiana, among other lands.
Despite their victory, Britain's mounting costs from the war, and her efforts to recoup the costs from the colonies, eventually contributed to a growing colonial resentment; years later, this would set the stage for the American Revolutionary War in 1775.