List the government actions taken to decrease radical movements in the 1920s

With the end of World War I and the passage of the Eighteenth Amendment, Americans entered the distinctive 1920s — an era of Republican leadership, nationalistic and fundamentalist movements, and changing social conventions. Electing Republican presidents who favored business expansion rather than regulation, the American public enjoyed apparently unlimited prosperity, while fear of radicals and foreigners combined to almost completely close off America to immigration and contributed to the resurgence of hate groups such as the Ku Klux Klan. Religious fundamentalism revived as new moral and social attitudes came into vogue. Additionally, the first radio broadcasts and motion pictures expanded Americans' access to news and entertainment.

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