Which factor most contributed to the 1836 passage of the gag rule by the House of Representatives? OA, a pro slavery ruling by the Supreme Court
B. a shift in the balance of power in the Senate
c. pressure from antislavery groups in the North
OD, petitions from the governors of new territories

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.