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| Co-Prosperity Sphere | |
|---|---|
| Name | Co-Prosperity Sphere |
| Period | 1930s–1945 |
| Location | East Asia, Southeast Asia, Pacific Islands |
| Founder | Empire of Japan |
| Established | 1930s |
| Dissolved | 1945 |
Co-Prosperity Sphere The Co-Prosperity Sphere was an expansionist project promoted by the Empire of Japan during the 1930s and 1940s that sought to reorganize territorial control and resource allocation in East Asia, Southeast Asia, and the Pacific Ocean. It was proclaimed alongside campaigns such as the Second Sino-Japanese War and the Pacific War and entwined with institutions like the Imperial Japanese Army and the Imperial Japanese Navy. Prominent figures associated with its promotion include Hideki Tojo, Hirohito, Prince Konoe Fumimaro, Kanji Ishiwara, and Yosuke Matsuoka.
The initiative drew on earlier precedents including the Meiji Restoration, the First Sino-Japanese War, the Russo-Japanese War, and the Taisho Democracy era debates that involved actors such as Itō Hirobumi, Yamagata Aritomo, Okuma Shigenobu, and policymakers in the Diet of Japan. Strategic pressures from the Washington Naval Conference, the London Naval Treaty, and rivalries with the United States, the United Kingdom, and France informed planners like Baron Shidehara Kijūrō and strategists influenced by theorists such as Mahan. The resource constraints highlighted by events like the Great Depression and incidents including the Mukden Incident and the Marco Polo Bridge Incident accelerated plans discussed in circles with figures from the South Manchuria Railway Company, the Kwantung Army, and entrepreneurs associated with the Zaibatsu such as Mitsui, Mitsubishi, and Sumitomo.
Rhetoric invoked by proponents referenced pan-Asian ideas also used by intellectuals like Radhabinod Pal in later legal debates, while borrowing language resembling that of Sun Yat-sen and Rabindranath Tagore in cultural diplomacy. Politicians including Fumimaro Konoe and diplomats like Saburō Kurusu framed promises of "liberation" in contrast to colonial regimes of the Netherlands, the Belgian Congo administration and the British Raj. Economic aims intersected with strategic goals pursued by ministries such as the Ministry of War (Japan), the Ministry of the Navy (Japan), and the Ministry of Greater East Asia. Ideologues cited precedents from the Ottoman reforms, the Holy Roman Empire (as administrative analogies), and modern concepts promoted by think tanks and journals circulated among members of the House of Peers (Japan).
Implementation relied on military administrations exemplified by the Provisional Government of the Republic of China (1937–1940), the Reformed Government of the Republic of China (1938–1940), and puppet regimes such as Wang Jingwei's Reorganized National Government of China. Administrative practice involved cooperation with corporations like Nippon Steel, Nissan, Asahi Shimbun-linked groups, and colonial bureaucracies modeled on the Governor-General of Taiwan and the Governor-General of Korea. Territories were organized through offices comparable to the South Seas Mandate apparatus and engaged with regional elites such as the Siamese government under Plaek Phibunsongkhram and administrators in the Dutch East Indies who interacted with figures like Hirota Kōki and Teiichi Suzuki. Logistics drew on infrastructure projects similar to the South Manchuria Railway Zone and the Burma Railway, with labor practices involving conscripts and civilians overseen by agencies reminiscent of the Tokkō and the Special Higher Police.
Military strategy interlinked campaigns like the Battle of Midway, the Guadalcanal Campaign, the Pearl Harbor attack, and the Battle of Leyte Gulf with occupation policies conducted by the Kempeitai and commands such as the Southern Expeditionary Army Group. Economic policy prioritized access to raw materials from regions controlled by the Dutch East Indies, French Indochina, Malaya, and Borneo, while corporations including Sumitomo, Mitsubishi Heavy Industries, Imperial Japanese Army Air Force contractors, and the Nippon Yusen Kaisha shipping network were mobilized. Financial measures drew on instruments like wartime budgets debated in the Imperial Diet and financial entities comparable to the Bank of Japan and the Yokohama Specie Bank. Transportation and supply chains relied on ports such as Singapore, Hong Kong, Manila, and Rangoon and on airfields constructed on islands like Saipan and Guam.
Resistance emerged from national movements and military forces including the Chinese Communist Party, the Kuomintang, the Soviet Union's Far Eastern fronts, and nationalist groups in Indonesia led by figures like Sukarno and Mohammad Hatta. Allied responses involved governments such as the United States, the United Kingdom, the Republic of China (1912–1949), and the Free French and were coordinated through declarations and conferences including the Declaration by United Nations (1942), the Casablanca Conference, and the Cairo Conference. Anti-occupation activity included guerrilla campaigns linked to leaders like Ho Chi Minh and Aung San, uprisings in locations such as Manchuria and Burma Campaign (1944–1945), and diplomatic pressure from delegations to bodies like the United Nations and the International Military Tribunal for the Far East.
After Japan’s surrender following the Surrender of Japan and the Atomic bombings of Hiroshima and Nagasaki, occupation authorities under Douglas MacArthur and the Allied occupation of Japan dismantled institutional structures tied to the project. Postwar trials at the Tokyo Trials and scholarship by historians such as John Dower, Herbert Bix, Akira Iriye, Marius B. Jansen, and Eugene J. Van Cleef have debated its motives, comparing it to imperial systems like the British Empire, the Dutch Empire, and the United States's overseas territories. Long-term impacts are evident in postwar decolonization movements resulting in states such as Indonesia, Philippines, Malaysia, Myanmar, and the People's Republic of China and in regional institutions that include the Association of Southeast Asian Nations and Cold War alignments with the United States and the Soviet Union. Contemporary analysis intersects with studies by scholars associated with Harvard University, University of Tokyo, Princeton University, and archives including the National Archives and Records Administration and the National Diet Library.
Category:History of East Asia Category:Empire of Japan