అర్థం : United States historian noted for studies of Black American history (born in 1915).

అర్థం : Printer whose success as an author led him to take up politics. He helped draw up the Declaration of Independence and the Constitution. He played a major role in the American Revolution and negotiated French support for the colonists. As a scientist he is remembered particularly for his research in electricity (1706-1790).

అర్థం : A landowner (14th and 15th centuries) who was free but not of noble birth.