Final answer:
During the siege, the Americans used deception and stealth tactics to confuse the British. Troops from Pennsylvania pretended to be the entire American army while the rest of the forces silently retreated. They maintained cooperation and kept campfires lit to deceive the British.
Step-by-step explanation:
The Americans implemented spies during the siege by using deception and stealth tactics to confuse the British. General Washington's bold plan involved having troops from Pennsylvania pretend to be his entire army, while the rest of his forces silently retreated. They maintained cooperation and muffled any noise to remain undetected. The campfires were kept lit to deceive the British, and the Pennsylvanians manned the battlements to create the illusion that Washington's troops were still in place.