How did the Silk Road develop and what did it lead to? (Site 1) What did the "discovered books" of Confucius do for Wang Mang? (Site 2)

3. i would say one, but one is not prime nor composite.

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.