The document discusses the moral reform movement of the Progressive Era that aimed to improve lives and promote middle-class values among the poor through prohibiting alcohol. Key reform groups like the Women's Christian Temperance Union and Anti-Saloon League lobbied to ban alcoholic beverages and close bars, seeing them as contributing to issues like political corruption and blocking assimilation. Their efforts led to the passage of the 18th Amendment in 1920 establishing Prohibition, though it was later repealed in 1933 by the 21st Amendment.