Final answer:
During the Battle of Long Island, the British and Hessian troops were able to flank the American forces, forcing them to retreat and become trapped on Brooklyn Heights. The advantage of the heights made it difficult for the British to take the position by force, but the Americans were cut off and surrounded by the British troops and navy.
Step-by-step explanation:
The big problem created by British and Hessian troops was that they were able to flank the American troops during the Battle of Long Island. General Howe led the majority of British troops through the Jamaica Pass at night, catching the Americans between his forces.
This resulted in the Americans being forced to retreat towards the Brooklyn Heights, where they were essentially trapped. The advantage of Brooklyn Heights was its height, making it difficult to take by force. The British troops extended their lines, laying siege to the Continental position.
On the opposite side was the water of the East River, where the British Navy waited. Ultimately, the problem faced by the American troops was being surrounded and cut off from aid.