Why does the demilitarized zone exist? a. to provide a neutral area to make trade between the two koreas easier b. to provide an area where people from north and south korea can get together c. neither north korea north south korea wanted to maintain an army d because no peace treaty was signed to end the korean war

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.