Political map of Europe & the Mediterranean 28 October 1922 (Mussolini's March on Rome): The weakness of the Italian government and dissatisfaction with Italian gains in the Peace Treaties allowed for the rise of Benito Mussolini (Benito Mussolini) and his extreme right-wing National Fascist Party (National Fascist Party). In October, they marched on the capital (March on Rome), pressuring the King (Victor Emmanuel III of Italy) to accept them as the new government.