Global stratification examines patterns of social inequality between nations, categorizing countries based on various factors such as economic status, health, education, and political structures. Historically, the classification of countries into First World, Second World, and Third World emerged after World War II, primarily reflecting levels of industrialization and government types. First World countries, like the United States and Western Europe, were highly industrialized capitalist nations. Second World countries, including Eastern Europe and China, had moderate industrialization and often socialist governments. Third World countries, encompassing much of Africa, South America, and parts of Asia, had low industrialization and diverse governance systems.
This older system faced criticism for its lack of nuance, especially in grouping diverse Third World countries together without considering their unique economic or political contexts. Additionally, the classification was heavily influenced by Cold War politics, reflecting ideological and military alliances rather than purely economic or social realities. The terminology also implied a hierarchical ranking, which suggested that First World countries were superior, an implication that modern perspectives seek to avoid.
In recent decades, a more refined system based on Gross National Income (GNI) has been adopted, primarily guided by the World Bank. GNI measures a country's total income divided by its population, providing an average income per person. Countries are categorized as high income (GNI approximately \$14,000 or more per person), middle income (GNI between \$4,000 and \$14,000), or low income (GNI below \$4,000). High-income nations typically enjoy the highest standards of living, while low-income countries face significant poverty and limited resources.
Despite improvements, the GNI-based system also has limitations. It focuses solely on income, overlooking critical factors like healthcare access, education quality, and political stability. Moreover, GNI averages can be misleading due to income inequality within countries. For example, the United States has a high GNI per capita (around \$80,000), but this figure does not reflect the substantial income disparities, with about 20% of Americans classified as low income and 10% living in poverty. This discrepancy arises because averages can be skewed by outliers, such as billionaires, which inflate the mean income and mask the true economic diversity.
Overall, global stratification remains a complex issue without a perfect classification system. Both historical and modern approaches provide useful frameworks but must be understood within their limitations, emphasizing the importance of considering multiple dimensions of inequality beyond simple economic measures.
