Dependency Theory
Structuralism--The Core gets more benefit out of free core-periphery trade than the periphery, and the terms of trade gradually worsen for the periphery
Prebisch
Singer
Furtado
Exploitative Dependence--The Core takes unfair advantage of the periphery's systematic vulnerability in "free" trade, and the periphery gets a bad deal in such trade, and the terms of trade may gradually worsen
Cardoso
Faletto
Core Capitalism as Exploitative Underdeveloper--The Core Prevents Capitalist Development at the Periphery, as well as exploits its vulnerability in trade
Baran
Frank
Dos Santos
Amin
Wallerstein
Rodney
World-systems Analysis
Frank
Wallerstein
Amin