What was the cause and effect of africans in southern africa moving north

n the preindustrial era, environmental factors like droughts, natural disasters, and climate all influenced human decisions about where to migrate. The expansion of Bantu-speaking peoples through Central Africa illustrates this relationship between environment and migration.

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.

answer; posthypnotic;