Before Pearl Harbor: How Japan’s War in Asia Led to a Clash with the United States
USS Arizona burns after the attack. U.S. National Archives, photo 80-G-32420 . Japan’s attack on Pearl Harbor on December 7, 1941 followed decades of imperial expansion, a prolonged war in China, advances into Southeast Asia, U.S. economic pressure and failed negotiations. The confrontation developed through decisions made over years, as Japanese leaders prepared a wider Pacific offensive. The roots were older than Pearl Harbor In the late nineteenth and early twentieth centuries, Japan industrialized rapidly and became an imperial power. Like other major powers of the era, it sought territory, resources and influence beyond its home islands. Japan annexed Korea in 1910 and expanded its influence on the Asian mainland. This longer history matters: the crisis of 1941 was not simply about trade or oil; it unfolded within an empire built through military expansion and the resistance that expansion provoked. Japan's leaders presented expansion as necessary for security, status and ...