Which golfer won all four major championships of his day in 1930, a "Grand Slam"?

Which 1930 Best Picture Oscar winner was based on Erich Maria Remarque's novel "All Quiet..."? Which 1930 Dashiell Hammett novel follows Sam Spade's hunt for a jewel-encrusted bird statuette? Rocket pioneer Goddard and humorist Benchley shared which first name, one of the most popular for American boys around… In which 1931 Fritz Lang film does Peter Lorre play a child murderer? In 1930, who was crowned emperor of Ethiopia? Which 1930 painting shows a woman with a cameo brooch, a balding man with glasses holding a pitchfork, and a Gothic Rev… Which 1930 film portrays World War I trench warfare from the German side? The 1930 film "Anna Christie" was advertised with the line "Garbo" does what?