figures such as Al Capone, boss of the Chicago Outfit. The Immigration Act of 1924 places restrictions on immigration. National quotas curbed most Eastern and Southern European nationalities, further enforced the ban on immigration of East Asians, Indians and Africans, and put mild regulations on nationalities from the Western Hemisphere (Latin Americans). The major sport was baseball and the most famous player was Babe Ruth. The Lost Generation (which characterized disillusionment), was the name Gertrude Stein gave to American writers, poets, and artists living in Europe during the 1920s. Famous members of the Lost Generation include Cole Porter, Gerald Murphy, Patrick Henry Bruce, Waldo Peirce, Ernest Hemingway, F. Scott Fitzgerald, Zelda Fitzgerald, Ezra Pound, John Dos Passos, and Sherwood Anderson. A peak in the early 1920s in the membership of the Ku Klux Klan of four to five million members (after its reemergence in 1915), followed by a rapid decline down to an estimated 30,000 members by 1930. The Scopes Trial (1925), which declared that John T. Scopes had violated the law by teaching evolution in schools, creating tension between the competing theories of creationism and evolutionism. Europe Polish–Soviet War (1920–21); Poland defeats Soviet expansion; Ukraine and Belarus were divided. Major armed conflict in Ireland including Irish War of Independence (1919–1921) resulting in Ireland becoming an independent country in 1922 followed by the Irish Civil War (1922–23). Russian famine of 1921–22 claimed up to five million victims. The Union of Soviet Socialist Republics (Soviet Union) is created in 1922. Benito Mussolini leader of the National Fascist Party became Prime Minister of Italy, shortly thereafter creating the world's first fascist government. The Fascist regime establishes a totalitarian state led by Mussolini as a dictator. The Fascist regime restores good relations between the Roman Catholic Church and Italy with the Lateran Treaty, which creates Vatican City. The Fascist regime pursues an aggressive expansionist agenda in Europe such as by raiding the Greek island of Corfu in 1923, pressuring Albania to submit to becoming a de facto Italian protectorate in the mid-1920s, and holding territorial aims on the region of Dalmatia in Yugoslavia. In Germany, the Weimar Republic suffers from economic crisis in the early 1920s and hyperinflation of currency in 1923. From 1923 to 1925 the Occupation of the Ruhr takes place. The Ruhr was an industrial region of Germany taken over by the military forces of the French Third Republic and