Final answer:
The naval engagement between the French and British near Yorktown during the American Revolution resulted in a French victory and blockade of the York River.
Step-by-step explanation:
The naval engagement between the French and British near Yorktown took place during the American Revolution in 1781. The French Admiral de Grasse sailed his naval force into Chesapeake Bay and defeated the British fleet, leaving the French in control of the bay and able to blockade the York River. This naval victory played a crucial role in the siege of Yorktown and ultimately led to the surrender of Lieutenant General Lord William Cornwallis and the end of the American Revolution.