asiahb2003 asiahb2003 24-10-2021 History contestada HELP ASAP ILL MAKE BRAINIEST!!!! All were reasons for a decline in the support of prohibition by the late 1920s, except options: Prohibition was difficult to enforce. There was an increase in the illegal production and sale of liquor. There was a rise in gang violence and other crimes. There was a 30% drop in alcohol consumption in the U.S.