Benjamin Franklin was a leading intellectual of the 18th century who was also one of the Founding Fathers of the United States. He was a successful printer, scientist, inventor and diplomat who signed both the Declaration of Independence (which he helped draft) and the Constitution. At the time of the Constitutional Convention (1787), Franklin was serving as the 6th "President" of Pennsylvania (Governor). He served as the Ambassador to Sweden and then as Ambassador to France. Later, he became the first Postmaster General of the United States.