Which star made her final film, "Two-Faced Woman," in 1941 and became a U.S. citizen in 1951?

Gary Cooper won his first Oscar for which 1941 film? Complete the title of the 1941 Best Picture: "How Green Was ___". Which 1941 film includes the line "I guess Rosebud is just a piece in a jigsaw puzzle, a missing piece"? In a 1941 film classic, which newspaper tycoon tells his guardian, "I think it would be fun to run a newspaper"? In which 1941 film does a reporter try to learn the meaning of a dead newspaper tycoon's last word? In a famous plot quibble about a 1941 Orson Welles film, no one seems to be in the room to hear the tycoon's dying word… In which 1941 film does private detective Sam Spade seek a priceless statuette? Created in 1941, which civilian volunteer organization became the official auxiliary of the U.S. Air Force?