Which of the following areas was not part of the han empire?

Europe and the Americas

A. would be the correct answer because when african americans moved from there to kansas they worked for the people they lived with

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.