In what year did Christopher Columbus return to Spain from his first voyage?

Count Orsini-Rosenberg, Emperor Joseph II and Antonio Salieri are characters in which play and film? Which word describes something countable, with an end or limit? Countee Cullen and Langston Hughes were part of which 1920s New York cultural movement? Con artist and art forger Neal Caffrey helps the FBI catch criminals in which USA Network series? Which song was Counting Crows' breakthrough hit from their 1993 debut album? Countless hammers have swung since which housing organization was founded in Georgia in 1976? Bobby Fischer won the 1972 world chess championship against Boris Spassky in which country? Which 2008 presidential candidate campaigned with the slogan "Country First"?