During the 1920s, the introduction of the 18th Amendment and the Volstead Act had a profound impact on American society as Prohibition sought to eradicate alcohol consumption. Ratified in 1919, the 18th Amendment banned the manufacturing, sale, and transportation of alcoholic beverages. The Volstead Act, passed in 1919, provided guidelines for enforcement. As a result, alcohol consumption dropped significantly. In 1920, per capita alcohol consumption was 30% of its pre-Prohibition levels. However, the demand for alcohol remained high, leading to the rise of illegal activities. Speakeasies, illegal bars that operated covertly, numbered around 100,000 by the mid-1920s. The illegal alcohol trade became a lucrative business, with estimates suggesting that over 10,000 illegal distilleries operated across the country. Gangsters like Al Capone made millions from bootlegging and controlled the supply of alcohol in major cities. Despite efforts to enforce Prohibition, arrests for alcohol-related offenses were difficult due to widespread corruption. By the end of the 1920s, it became clear that Prohibition had failed, and it was eventually repealed in 1933 with the ratification of the 21st Amendment.