Tell what Romans may learn from the Etruscans and why they should not turn against
the new rulers.

They need not fear the Etruscans because they are not people who enslave but rather farmers and traders very much like us.  They have grown through their contact with other people and have been prosperous due to their business transactions with other races.  They also learned a lot from these people and we can learn from them too.

Explanation:

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.