Final answer:
The Battle of Saratoga led to an allied partnership with France, which changed the course of the war by providing much-needed military support to the Americans.
Step-by-step explanation:
The Battle of Saratoga was a major turning point in the American Revolutionary War. It led to an allied partnership with France. The American victory at Saratoga convinced the French to recognize American independence and form a military alliance with the new nation. This partnership changed the course of the war by opening the door to military support, such as soldiers, naval forces, and supplies, from France.