World-Systems Theory:A theoretical framework developed by Wallerstein that views the global economy as a single integrated system, divided into core, semi-periphery, and periphery countries, with the core exploiting the periphery.
Core-Periphery Model: A key concept in Wallerstein's world-systems theory that categorizes countries into core (dominant, industrialized), semi-periphery (developing), and periphery (underdeveloped, exploited) based on their position in the global economy.
Unequal Exchange: The idea that core countries extract more value from their economic relationships with peripheral countries, leading to an imbalance of power and wealth between the two.