The mesopotamians developed blank and invented blank

because he had a big bear belly

answer; the edward snowden leaks of nsa classified material;

the answer your looking for is c. : )

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.