The Aztec believed they needed to be descended from the Toltec in order to gain "respect" of neighbouring societies. Why did they believe this?

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.