Why did the totalitarian states rise after World War 1 and what did they do?

Totalitarian states rose after World War I due to widespread discontent, economic instability, and social upheaval in many countries, particularly in Europe. The devastation of the war created a power vacuum and fertile ground for authoritarian leaders who promised stability and national rejuvenation. These regimes, such as those in Germany, Italy, and the Soviet Union, centralized power, suppressed dissent, and implemented policies that aimed to control all aspects of life, including politics, the economy, and culture, often through Propaganda and violent repression. Ultimately, they sought to create a unified national identity and exert total control over their societies.