Project Overview
World-systems analysis describes the capitalist world-economy as a single, stratified whole, divided into a core, a semi-periphery, and a periphery. Yet there is no settled way to assign countries to these zones. This project develops a classification built from the structure of the global foreign direct investment network, using the Core Capital Dependency Index together with national income, and then asks how countries move within that structure over time.
Fitting Gaussian mixture models to 165 countries from 2009 to 2023, the analysis recovers a four-class structure: a core, an upper and a lower semi-periphery, and a periphery. I distinguish a durable structural position, estimated by pooling all years, from a relative position estimated separately within each annual network, and I use the relative classification to study year-to-year mobility. The central finding is an asymmetry between rising and falling, described below.
A Four-Class World-System
The classification draws on two dimensions that world-systems theory has always treated as central: the relational structure of cross-border capital ownership, captured by the Core Capital Dependency Index, and the level of national income. Countries that are income-rich and net exporters of capital fall in the core; countries that are income-poor and structurally dependent on core capital fall in the periphery; the intermediate combinations populate an upper and a lower semi-periphery.
Core
High-income net capital exporters of Western Europe, North America, the wealthy Pacific economies, and the richest Gulf states.
Upper semi-periphery
Large emerging economies and rentier states, including China, Russia, Brazil, India, and several Gulf and Eastern European countries.
Lower semi-periphery
Middle-income but more dependent economies that sit between the rising middle and the periphery.
Periphery
Low-income, highly dependent economies concentrated in the Sahel, Central Asia, and the poorest parts of Latin America and the Caribbean.
The World-System in 2023
The map below shows the structural position of each country in 2023. Hover over a country for its class, its Core Capital Dependency score, and its national income. Scroll to zoom and drag to pan.
Dependency and Income
The two classification inputs separate the four classes cleanly. Dependency rises and income falls as one moves from core to periphery, the monotonic pattern world-systems theory predicts. Hover over any point for the country and its values. Dashed lines mark the model's class boundaries; fainter points are boundary cases assigned with lower confidence.
Movement, 2009 to 2023
Structural position is highly stable across the period. Of the 141 countries observed in both 2009 and 2023, the large majority remain in the same class, and the movement that does occur is overwhelmingly upward and gradual, concentrated in the rising economies of Asia and the Gulf. Hover over any flow to see which countries made that move.
Position and Its Dynamics
Three models describe the system. A model of position level asks what distinguishes high positions from low ones. Two models of mobility ask what predicts a country's movement up, toward the core, and down, toward the periphery. The coefficient plot below shows all three. Colored bars are statistically significant; gray bars are not. Hover for exact values.
The anatomy of position is as the theory predicts: core position goes with stronger democracy, political stability, a manufacturing export profile, and migration, and is lower among economies with large state sectors, agrarian export structures, and rapid population growth. Trade openness is negatively associated with position, consistent with dependency accounts of integration as subordination rather than advance.
The dynamics, however, are asymmetric. Downward movement is institutionally structured and reasonably predictable, driven by weaker democracy, demographic pressure, and a larger state sector. Upward movement is only weakly predictable from the same factors. Democracy stabilizes a country's position in both directions, reducing the odds of falling and, more surprisingly, the odds of rising. The forces that govern descent differ systematically from those that govern ascent.