Identify one positive impact and one negative impact of European colonization.

Positive: the colonial governments introduced improved medical care, and better methods of sanitation PLUS new healthy crops such as potatoes :)

Negative: The Europeans brought many diseases with them that decimated Native American populations.

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.