Jazz music became popular in the 1920s and was accompanied by new dances like the shimmy, turkey trot, and bunny hug. Silent movies dominated the era and were considered an art form, with the first talking picture, The Jazz Singer, debuting in 1927. Bestselling books of the decade included The Great Gatsby and The Sun Also Rises. The 1920s saw major scientific advances such as the discovery of vitamins and insulin, as well as the first liquid-fueled rocket launch. Gang violence and prohibition were also defining aspects of the period.
