Complex sentence: He earned a M.A. from Duke University, Durham, North Carolina in 1968, a Ph.D. from Duke in 1970 and was professor of political science at Calvin College in Grand Rapids, Michigan from 1970 to 1978.
Split into simpler sentences: He earned a M.A. from Duke University, Durham, North Carolina in 1968, a Ph.D. from Duke in 1970. Henry was professor of political science at Calvin College in Grand Rapids, Michigan from 1970 to 1978.