By the end of this section, you should be able to: Define global stratification Describe different sociological models for understanding global stratification Explain the ways that studies of global stratification enable social scientists to identify worldwide inequalities Figure 9.11 A family lives in this grass hut in Ethiopia. Another family lives in a single-wide trailer in the United States. Both families are considered poor, or lower class. With such differences in global stratification, what constitutes poverty? (Credit: (a) Canned Muffins/flickr; Photo (b) Herb Neufeld/flickr) Global stratification compares the wealth, status, power, and economic stability of countries across the world. Global stratification highlights worldwide patterns of social inequality. In the early years of civilization, hunter-gatherer and agrarian societies lived off the earth and rarely interacted with other societies. When explorers began traveling, societies began trading goods, as well as ideas and customs. In the nineteenth century, the Industrial Revolution created unprecedented wealth in Western Europe and North America. Due to mechanical inventions and new means of production, people began working in factories—not only men, but women and children as well. By the late nineteenth and early twentieth centuries, industrial technology had gradually raised the standard of living for many people in the United States and Europe. The Industrial Revolution also saw the rise of vast inequalities between countries that were industrialized and those that were not. As some nations embraced technology and saw increased wealth and goods, the non-industrialized nations fell behind economically, and the gap widened. Sociologists studying global stratification analyze economic comparisons between nations. Income, purchasing power, and wealth are used to calculate global stratification. Global stratification also compares the quality of life that a country’s population can have. Poverty levels have been shown to vary greatly across countries. Yet all countries struggle to support the lower classes.