Final answer:
Louis Armstrong moved to Chicago in 1922 to join Oliver's Creole Jazz Band, where his career took off and he became one of the most influential figures in jazz.
Step-by-step explanation:
In 1922, Louis Armstrong moved to Chicago to join his mentor King Oliver's group, Oliver's Creole Jazz Band. Chicago was a major hub for jazz in the 1920s, with vibrant music scenes and venues like the Savoy Ballroom and the Apollo Theater. It was in Chicago where Armstrong's career took off and he became one of the most influential figures in jazz history.