Bronfenbrenner developed the ecological systems theory in the 1970s and according to the theory, Mesosystem refers to a system where children are affected by both the close relationships and the close environment in which they develop. Hence, when one of the two are disturbed it tend to affect the others. Like if things are not good at school or school environment is not good then it will affect the child's behavior with parents and at home. Similarly, here parents' divorce has affected behavior in school hence home and school environments are part of Mesosystem.
The cartoon is drawn to highlight the corruption of the government by the monopolies. You can tell this from looking at the shirts of the people in the top row and the engraving on the wall in terms of monopolies.
