1920s

Years

 * 1920
 * 1921
 * 1922
 * 1923
 * 1924
 * 1925
 * 1926
 * 1927
 * 1928
 * 1929

Events

 * Criminal gangs exercise substantial power in the city of Chicago. This period will be the subject of the book Chicago Mobs of the Twenties, which will later influence the inhabitants of Sigma Iotia II. (TOS episode: "A Piece of the Action").
 * Wesley Crusher transports William T. Riker to a jazz club in Illinois. (TNG short story "Adventures in Time and Jazz")