- "...We need more land! The French understand this, and endeavor to prevent such growth... This is why we ride, to offer them one last chance. The French will leave... or they will die!"
- ―Edward Braddock, on the cause of the war, 1755.[src]
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, the so called French and Indian War.  It also occurred 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 did not begin on an international scale until 1756 and ended in 1763, and is from these years that 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. In Europe, the war was largely fought with sieges and arson along with several open battles. 
The French and Indian War was fought primarily along the frontiers, separating New France from the British colonies spanning Virginia to Nova Scotia. This conflict involved Templar manipulation, with the perpetrators composing of Haytham Kenway, William Johnson, Shay Cormac and others. In contrast, the Colonial Assassins allied themselves primarily with the French-native alliance, and helped them in several conflicts, most notably the Siege of Fort William Henry.
The armies marched their way through different forts during the Braddock Expedition, an ambush led by Templar Edward Braddock but the expedition was a complete failure through the efforts of Haytham Kenway and the Templars, who sought to bring down his atrocities in killing innocents. British and French soldiers battled from camp through camp at River Valley where the French forces, who were aided by the Assassins, were at first victorious but the British, who in turn, were allied with the Templars, managed to capture several forts and settlements under French control with the help of Shay Cormac.
Several key historical figures were involved in the war, including the future President of the United States, George Washington. The Templars John Pitcairn and Charles Lee also participated in the conflict, with several of the members 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 Templars 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. The Thirteen Colonies had successfully conquered New France and expanded into unharmed Indian territory, where they continued to displace the natives. Some indigenous tribes were forced to migrate as far west as Spanish Louisiana, where they presumably assimilated with the local tribes.
The British had also taken over French Canada, that bordered the frontier of Rupert's Land, along with Canada's northeastern islands that bordered the Arctic Ocean and most of the French islands in the Caribbean and the west of Spanish Florida, which the British renamed West Florida. However, they were all separate nations from the Thirteen Colonies. After the war, all that remained of the French Empire in North America were Haiti and the two Caribbean islands of Guadeloupe and Martinique.
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.