Final answer:
The Volstead Act defined all beverages with more than 0.5 percent alcohol as intoxicating, operationalizing the Eighteenth Amendment's prohibition of alcohol which was later repealed by the Twenty-First Amendment.
Step-by-step explanation:
The Volstead Act strengthened the language of the Eighteenth Amendment and defined all beverages containing more than 0.5 percent alcohol as intoxicating. The purpose of the Volstead Act was to provide an enforceable method for the prohibition of alcoholic beverages, as stipulated by the Eighteenth Amendment, which had outlawed the manufacture, transport, and sale of intoxicating liquors. Despite the intention to curtail alcohol consumption, the law faced significant challenges including widespread illegal distribution and consumption of alcohol, leading to its eventual repeal through the Twenty-First Amendment in 1933.