Why could cornwallis not be reinforced by british ships coming down the york river from the west

This event happened during the Siege of Yorktown, that was a battle that happened in Yorktown - Virginia between American and French Army and British Army. Charles Cornwallis was the Lieutenant General of the British Army and he surrendered because of the capture of him and his army.

The ships of Britain could not help him because the French army - that was on American’s side - were firing on them. Another French ship prevented them from escaping to the sea.

answer; i believe the correct answer is norming;

a. the moon was locked into orbit by the earths gravity as it was passing by and capture hypothesis i think