Name 3 famous african american who lived on sugar hill

Three names are: Walter Francis White, Cab Calloway and Thurgood Marshall were the three that lived on sugar hill.

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.