Last word studies indicate that married men on average earn more income than unmarried men of the same age and education level. why must we be cautious in concluding that marriage is the cause and higher income is the effect?

Urban growth invariably feeds increased commercialization and industrialization. it requires continually expanding land areas. when urbanization rates are high, and countries do not have the institutional and managerial capacities or economic wherewithal to manage such rapid growths, they exert intense pressure on the types and nature of the resulting settlements. they contribute to the development of overcrowded slums and shanty towns without adequate essential services and necessary infrastructure.-by asit k. biswas and cecilia tortajada

:what is edwards's purpose for giving this sermon? which elements likely make the argument effective for a puritan audience?