What features was shared by the totalitarian regimes of GermanyItalyand the soviet union?

Totalitarian regimes in Germany, Italy, and the Soviet Union shared several key features, including centralized control of the government, suppression of political dissent, and the use of Propaganda to maintain authority and promote state ideologies. These regimes often employed state-sponsored violence and terror to eliminate opposition, with a focus on a single-party system led by a dictatorial leader. Additionally, they sought to mobilize the entire population through mass organizations and indoctrination, emphasizing loyalty to the state over individual rights.