French and Indian War (Seven Years War) (1754–1758) Main article: George Washington in the French and Indian War See also: Battle of Jumonville Glen, Battle of the Great Meadows, Braddock expedition, and Forbes expedition
Washington's 1754 map showing Ohio River and surrounding region
In 1753, the French began expanding their military control into the "Ohio Country", a territory also claimed by the British colonies of Virginia and Pennsylvania. These competing claims led to a world war 1756–63 (called the French and Indian Warin the colonies and the Seven Years' War in Europe) and Washington was at the center of its beginning. The Ohio Company was one vehicle through which British investors planned to expand into the territory, opening new settlements and building trading posts for the Indian trade. Governor Dinwiddie received orders from the British government to warn the French of British claims, and sent Major Washington in late 1753 to deliver a letter informing the French of those claims and asking them to leave.[19]Washington also met with Tanacharison (also called "Half-King") and other Iroquois leaders allied to Virginia at Logstown to secure their support in case of conflict with the French; Washington and Tanacharison became friends and allies. Washington delivered the letter to the local French commander, who politely refused to leave.[20] Governor Dinwiddie sent Washington back to the Ohio Country to protect an Ohio Company group building a fort at present-day Pittsburgh, Pennsylvania. Before he reached the area, a French force drove out the company's crew and began construction of Fort Duquesne. With Mingoallies led by Tanacharison, Washington and some of his militia unit ambushed a French scouting party of some 30 men, led by Joseph Coulon de Jumonville; Jumonville was killed.[21]The French responded by attacking and capturing Washington at Fort Necessity in July 1754.[22] However, he was allowed to return with his troops to Virginia. Historian Joseph Ellis concludes that the episode demonstrated Washington's bravery, initiative, inexperience and impetuosity.[23] These events had international consequences; the French accused Washington of assassinating Jumonville, who they claimed was on a diplomatic mission.[23] Both France and Britain were ready to fight for control of the region and both sent troops to North America in 1755; war was formally declared in 1756.[24]