What features was shared by the totalitarian regimes in Germany Italy and the soviet union?

Totalitarian regimes in Germany, Italy, and the Soviet Union shared several key features, including centralized control over the state and society, the suppression of political dissent, and the use of Propaganda to promote their ideologies. Each regime emphasized a strong, often charismatic leader who embodied nationalistic or ideological goals. They also employed state-sponsored terror and violence to maintain power, along with extensive surveillance and censorship to control information and public opinion. Additionally, these regimes sought to mobilize citizens through mass organizations and indoctrination.