The correct answer is: "His successes during the French and Indian War impressed Congress."
George Washington began earning decorations by arming troops from the Virginia colony to support the British Empire during the Franco-Indian War (1754-1763), a conflict he unwittingly helped initiate.
The Continental Congress appointed Washington Commander in Chief of the Continental Army in 1775. The following year, the British were evicted from Boston, lost the city of New York and were defeated in Trenton, New Jersey, to the surprise caused by Washington crossing the river Delaware. Due to their strategy, revolutionary forces captured the two main British combat armies at the Battle of Saratoga and the Battle of Yorktown. In negotiation with Congress, the colonial states and the French allies, he maintained a weak army and a fragile nation amid the threats of disintegration and failure. After leading the American victory in the War of Independence, he resigned his military posts and returned to life at his plantation in Mount Vernon, an act that brought him even more renown.