What is an are of specialization minoans developed among its trading partners?

I think the area of specializations that the Minoans developed among its trading partner is : 
Gold Sculpture
It is possible because of the significant development  and the rise of Cretan Palaces

hope this helps

Very cool! free points wooo

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.