Answer:
The navies kept guard at Chesapeake Bay. Which means the British ships could not get in to help Cornwallis escape by sea. Also the navies had blocked supplies and reinforcements from reaching the British.
Step-by-step explanation:
uhh all i know about this is that the french forced the british to surrender because they prevented them from reinforcing their troops lol
hope this helps in any way
5.3m questions
6.8m answers