Which statement is best supported by the timeline below? A. The Songhai Empire played a role in the collapse of the Mail Empire
B. King Sunni found it important to create a unified West Africa
C. The Songhai Empire had a powerful influence over trade in South Africa
D. King Sunni was only interested in the Silk Road Trade Route

Correct textbook answers would be 1,3, and 5

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.