Historical Maps Empire of Japan at its greatest extent, 1942 April 18, 2016 Alex This post may contain affiliate links. As an Amazon Associate, we earn from qualifying purchases. Related Posts:Countries at its territorial peakEmpire of Japan at its heightWhat Mobile Brand Dominates the Market Share in Each…The Rise and Fall of the Inca Empire: A Cartographic…The Roman Empire at its Territorial HeightThe Eastern Roman EmpireThe Holy Roman EmpireGreatest extent of Japanese naval dominance