Question 4 Which of the following helped lead to an increase in the food supply in Europe?
the development of a two-field system
the switch to using oxen to plow fields
O a slightly cooler climate
the use of a new harness for horses

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.