The 1920s in the United States, in the years leading up to the great crash of 1929, were a period of rapid economic development, brought about in many ways by mass production during and after World War I. A rebirth of advertising allowed more of these goods to be purchased, which greatly increased US GDP.
Herbert Hoover and Al Smith ran in the election of 1928. Hoover and Smith represented different backgrounds, religious ideas; each appealed to different groups of Americans. Source -- Quizlet