During its 500-year history, the modern world-system has seen several shifts in hegemony. Yet, since the decline of the U.S. in the 1970s, no single core power has attained a hegemonic position in an increasingly polarized world. As income inequalities have become more pronounced in core countries, especially in the U.S. and the U.K., global inequalities emerged as a "new" topic of social scientific scholarship, ignoring the constant move toward polarization that has been characteristic of the entire modern world-system. At the same time, the rise of new states (most notably, the BRICS) and the relative economic growth of particular regions (especially East Asia) have prompted speculations about the next hegemon that largely disregard both the longue dur