The question "Will it play in ___?", about which Illinois city, became a test of mainstream American appeal?

Which Verdi opera, set in ancient Egypt, premiered in Cairo in 1871? Which 1927 Jerome Kern musical follows performers on a Mississippi River boat? A 1920s hit by Sammy Fain and Irving Kahal said to "Let a" what "be your umbrella"? Watching fish freeze solid in Labrador inspired Clarence Birdseye's method of preserving food by what? A 1921 poem by Vachel Lindsay was "In Praise of" which wandering planter? A 1921 treaty dividing an island, with an oath of fidelity to the Crown, led to civil war in which country? A 1924 law granted U.S. citizenship to which people, whose tribes were once called "domestic dependent nations"? A 1924 campaign poster for which president featured an electric fan and the slogan "Keep Cool"?