Answer:
The French Navy, is the right answer.
Explanation:
At the Battle of Yorktown, the troops of America besieged the British lines and started to exfoliate them, while the French Navy obstructed any possibility for their escape by blockading the River York.
Lord Cornwallis the General of Britain, had withdrawn to the Yorktown peninsula in Virginia on June 1781. He assumed to stay and recovery for his troops, that was fighting against the revolutionary fighters of America. General George Washington gathered all prepared numbers to attack the British at Yorktown in the autumn of 1781. The availability of a 34-ship French combat navy did significant to accommodate in bombarding and beating the British at Yorktown also.
