What were the main cultural and intellectual trends in the interwar years?

The main cultural and intellectual trends in the interwar years surrealism surrealism.Surrealism became popular along with fantasy-like paintings as Europe wanted to create worlds that were unlike their war damaged one.

An informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.