 In the political sphere, “ the centralized administrative state has proved to be a more thorough instrument of oppression and exploitation than the democratic capitalist state.
<fluency>  In the political sphere, “ the centralized administrative state has proved to be a more thorough instrument of oppression and exploitation than the democratic capitalist state.
 In the political sphere, " the centralized administrative state has proved to be a more thorough instrument of oppression and exploitation than the democratic capitalist state.