Answer:
No, Britain's three-pronged battle, fought as an attempt to isolate England from other colonies by gaining power over New York, was not successful.
Step-by-step explanation:
A three pronged attack is an attack in three separate places against an enemy which in this case was realised as - General John Burgoyne from Canada, Colonel Barry St. Leger from the East and General Howe from the South.
But, unfortunately, the American armies, with the aid from the troups sent by France, defeated the British corollaries. Consequently, also, on October 19, 1781 Cornwallis surrendered to the Americans, declaring - “All is Over.” Also, Great Britain's Lord North was removed from his office and new government was formed in an attempt to make peace and give in to the Americans' demands for independence.