Final answer:
The statement is false as Washington crossed the Delaware River to attack Trenton, New Jersey, not to drive the enemy from Philadelphia which was captured by the British in 1777.
Step-by-step explanation:
The statement that Washington and his troops crossed the Delaware River and drove the enemy from Philadelphia is false. In reality, George Washington's famous crossing of the Delaware occurred on December 25, 1776, and led to a surprise attack on the Hessian forces in Trenton, New Jersey, not Philadelphia. In August 1777, the British, under General Howe, captured Philadelphia following the Battle of Brandywine Creek, compelling the Continental Congress to flee and allowing British forces to occupy the city throughout the winter of 1777-1778, while Washington's army camped at Valley Forge.