Final answer:
Benito Mussolini established a form of dictatorship in Italy, characterized by totalitarian control over the state's social and economic spheres after coming to power through the March on Rome in the early 1920s.
Step-by-step explanation:
Benito Mussolini initiated a form of dictatorship for his government. After World War One, Italy faced a period of social unrest, labor strikes, and the threat of a communist revolution. The political landscape at the time was marked by a multi-party parliamentary democracy that struggled to maintain stability and efficacy.
In response to these challenges, Mussolini's Fascist Party, through the March on Rome, came to power. By 1925, Mussolini had declared himself the supreme leader or 'Il Duce' and had imposed totalitarianism, a system where the state assumes control over all aspects of social and economic life. Under this regime, all political parties except the Fascist Party were outlawed, paving the way for a dictatorship that lasted until the end of World War II.