The Tokugawa Shogunate, which governed Japan for two and a half centuries until the mid-1860s, classed people into hierarchically ranked status groups (mibun). The early Tokugawa rulers legally established these status groups through the late-sixteenth and early-seventeenth centuries, adapting and clarifying existing customary divisions between warriors, peasants, artisans, and merchants. Subsequently, during the two and a half centuries of Tokugawa...