Scott Sernau teaches social stratification, international inequality and development, and race and ethnic relations. He is the author of Bound: Living in the Globalized World (Kumarian 2000) and Worlds Apart: Social Inequalities in a New Century (Sage 2001). This essay is excerpted from an article by the same title in Teaching Sociology, October 1995, Vol. 23: 364-373.
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Scott Sernau (1995) studied this question.