Supremacy of the state is a key characteristic of what political philosophy in the 1920s and 1930s?

Supremacy of the state is a key characteristic of Fascism political philosophy in the 1920s and 1930s.

Explanation:

The other key characteristic of Fascism is that Fascism streamed nationalism.People who followed Fascism believed that liberal democracy is obsolete.Fascism is a form of ultra nationalism which is driven by dictatorial power with forcible suppression of opposition and regimentation of society and economy.The first movements were seen in Italy and it later on spread across the different parts of Europe.

This answer would be c