Complex sentence: Richard Ernest Jackson, Jr. (born July 18,1945) is an American politician and mathematics teacher, who made black history in 1984 when he became Mayor of the City of Peekskill.
Split into simpler sentences: Richard Ernest Jackson, Jr. (born July 18,1945) is an American politician and mathematics teacher. He made black history in 1984 when he became Mayor of the City of Peekskill.