Final answer:
The turning point in the American Revolutionary War in favor of the British and essentially ending the war was the Battle of Saratoga in 1777, followed by the French alliance and the British surrender at Yorktown in 1781.
Step-by-step explanation:
The turning point in the American Revolutionary War in favor of the British was the Battle of Saratoga in 1777. This battle marked a major victory for the American forces and led to the French joining the war on the side of the colonies. The entry of the French, with their navy and military support, heavily favored the American cause and turned the tide of the war. The war essentially ended with the British surrender at Yorktown in 1781, after a series of battles and campaigns.
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