Final answer:
John Paul Jones led a naval attack for the Continental Navy and achieved a significant victory in the Battle of Flamborough Head.
Step-by-step explanation:
John Paul Jones' contribution to the war effort was that he led a naval attack in one of the few victories on the water for the Continental Navy. He is most notably remembered for his heroic actions during the Battle of Flamborough Head where his ship, the Bonhomme Richard, engaged the British ship HMS Serapis. Despite being outgunned and his ship being severely damaged, Jones refused to surrender and eventually captured the Serapis.
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