Final answer:
The British '3 Prong Attack Plan' during the American Revolutionary War aimed to isolate New England by controlling the Hudson River through a coordinated movement of three British armies from different locations.
Step-by-step explanation:
During the American Revolutionary War, the British "3 Prong Attack Plan" was aimed at isolating New England from the rest of the colonies. This strategy involved three British armies moving simultaneously from New York City, Montreal, and Fort Oswego to converge along the Hudson River. The purpose was to gain control of this natural boundary which would sever New England and potentially end the rebellion.
The initial successes of this strategy included the capture of New York City in 1776. However, the effort to isolate New England ultimately failed with the British surrender at the Battle of Saratoga in October 1777, which represented a turning point in the war. Following this engagement, French support for the revolutionary cause significantly increased, altering the course of the conflict.