Note to players: specific terms required. These two terms name John Friedmann's model of polarized urban development. Samir Amin's concept of “delinking” calls for separating the economies of concepts described by these two terms. Paul Krugman (-5[1])used these two terms to describe differentiated sectors of a country in the paper “Increasing Returns and Economic Geography.” A “semi-” version of one of these two concepts is added (15[1])in (*) world-systems (15[1])theory. The existence of (10[1])an exploitative relationship between these two regions (10[1])is the common extension of the Prebisch-Singer (10[1])thesis and is the central contention of dependency theory. For 10 points, name these two conceptual (10[1])regions in international political economy, one of which is wealthy and central, the other impoverished (10[1])and fringe. ■END■ (0[1])