In a 1974 referendum, Greece voted to abolish which institution?

A 1973 political science degree from Harvard's Radcliffe College was just the start for which first woman prime ministe… A 1973 song says "Give me the beat, boys, and free my soul, I wanna get lost in your rock and roll and" do what? A 1974 biography of which photographer is titled "Mr. Lincoln's Camera Man"? A 12th-century Japanese scroll illustrates which classic tale by Lady Murasaki? A 1974 spy scandal ended Willy Brandt's career as chancellor of which country? A 1974 U.S. stamp showed the Headless Horseman pursuing Ichabod Crane from which tale? A 1974 tornado destroyed about half of Xenia, a city whose name means "hospitality", in which state? Which inventor gave the world a code of dots and dashes that could carry messages electrically?