Which coral reef system became an Australian marine park in 1975?

Which player won the NHL's Hart Trophy as MVP in 1990 with Edmonton and in 1992 with the New York Rangers? Which American defeated Boris Spassky in Reykjavik in 1972 to become world chess champion? Which actress starred as babysitter Laurie Strode in the 1978 horror film "Halloween"? Princeton University's Nassau Hall served as the U.S. Capitol in 1783. In which state is it? Which famous British woman wrote the 2002 book "Statecraft: Strategies for a Changing World"? Which pope, the 13th to bear his name, served from 1572 to 1585? Which composer wrote his Cello Concerto in B minor in 1895 and died in Prague on May 1, 1904? Which T.S. Eliot comedy won the Tony Award for Best Play in 1950?