Question

after early colonial losses to the british in new york,
the colonies ratified the declaration of independence.
general washington set up headquarters in new jersey.
the continental army set up headquarters at fort lee.
general washington withdrew his troops to pennsylvania.

Explanation:

After early colonial military defeats against the British in New York during the American Revolutionary War, General George Washington strategically retreated his Continental Army across the Delaware River to Pennsylvania to regroup and avoid complete destruction. The other options are incorrect: the Declaration of Independence was ratified before these losses; Washington did not set up headquarters in New Jersey at this stage; Fort Lee was abandoned during the retreat from New York.

Answer:

General Washington withdrew his troops to Pennsylvania.