Who is the current secretary general of the united nations

what he said above me         look up that's the answer

the answer to your question is,

old stone age.

-mabel < 3

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.