Problem: There are two sentences in the "Urbanization" section that explain the reason why slums are growing so quickly in cities of the poorer developing countries. The first of these two sentences: "Numerous cities, especially in poorer parts of the world, have been unprepared for the massive inflow of rural migrants, many of whom now live in polluted slum areas . . .". Quote the sentence later in the section that again explains (repeats) this reason. Need Assignment Help?