Final answer:
The Battle of Saratoga marked the turning point of the Revolutionary War.
Step-by-step explanation:
The battle that marked the turning point of the Revolutionary War was the Battle of Saratoga. It took place in 1777 and resulted in a major victory for the American colonists. General Horatio Gates led the American forces, and their triumph at Saratoga convinced France to formally ally with the United States, providing crucial support for the remainder of the war.
Learn more about Battles of the Revolutionary War