Final answer:
The aid from France that proved crucial to the American victory became available after the Battle of Saratoga.
Step-by-step explanation:
The aid from France that eventually helped the American victory became available after the Battle of Saratoga.
The American victory at Saratoga convinced the French to recognize American independence and form a military alliance with the new nation. As a result, France supplied the United States with supplies, money, soldiers, and naval forces, which played a crucial role in the defeat of Great Britain.
The French also provided military leaders, such as the Marquis de Lafayette, who served as Washington's aide-de-camp.