the new capitalist world system was based on an international division of labor that determined relationships between different regions as well as the types of labor conditions within each region. In this model, the type of political system was also directly related to each region's placement within the world economy. As a basis for comparison, Wallerstein proposes four different categories, core, semi-periphery, periphery, and external, into which all regions of the world can be placed. The categories describe each region's relative position within the world economy as well as certain internal political and economic characteristics.