Why might general Cornwallis voice of Yorktown as a base have left him at a military disadvantage?

he liked bunz

NEW RESPONDENT

Because instead exploit his overwhelming in numbers (7,500) against the Patriot Armies led by Lafayette, Baron Von Steuben and gen. Wayne (4,500), he had until the end of July 1781 in Virginia, he preferred turning eastward to the coast to maintain the sea communications with sir Henry Clinton in New York.

On august 1, he reached and fortified Yorktown, thus giving up his freedom of movements and allowing the American and French forces to start a regular siege, which left him no other solution but to surrender.