Pan-Asianism in the context of "Western imperialism in Asia"

The Greater East Asia Co-Prosperity Sphere (Japanese: 大東亜共栄圏, Hepburn: Dai Tōa Kyōeiken), also known as the GEACPS, was a pan-Asian union that the Empire of Japan tried to establish. Initially, it covered Japan (including annexed Korea), Manchukuo, and China, but as the Pacific War progressed, it also included territories in Southeast Asia and parts of India. The term was first coined by Minister for Foreign Affairs Hachirō Arita on June 29, 1940.

The proposed objectives of this union were to ensure economic self-sufficiency and cooperation among the member states, along with resisting the influence of Western imperialism and Soviet communism. In reality, militarists and nationalists saw it as an effective propaganda tool to enforce Japanese hegemony. The latter approach was reflected in a document released by Japan's Ministry of Health and Welfare, An Investigation of Global Policy with the Yamato Race as Nucleus, which promoted racial supremacist theories. Japanese spokesmen openly described the Greater East Asia Co-Prosperity Sphere as a device for the "development of the Japanese race." When World War II ended, the Greater East Asia Co-Prosperity Sphere became a source of criticism and scorn for the Allies.

Pan-nationalism (from Ancient Greek πᾶν (pân) 'all' and French nationalisme 'nationalism') in the social sciences includes forms of nationalism that aim to transcend (overcome, expand) traditional boundaries of basic or historical national identities in order to create a "higher" pan-national (all-inclusive) identity, based on various common denominators. In relation to classical state nationalism, pan-nationalism manifests itself through various political movements that advocate the formation of "higher" (pan-national) forms of political identity, based on a regional or continental grouping of national states, such as Pan-Africanism, Pan-Americanism, Pan-Arabism, Pan-Asianism, Pan-Slavism, and Pan-Turkism. In terms of ethnic nationalism, pan-nationalism can also manifest itself through specific ethnic movements that advocate setting up "higher" (pan-national) forms of common identity that are based on ethnic grouping (for example: Pan-Germanism or Pan-Slavism). Other forms of nationalism also have their pan-national variants.

Some forms of pan-nationalism, such as Pan-Germanism, manifest themselves on two levels: wider - relating to the unity of all Germanic peoples - and narrower - relating to the unity of all ethnic Germans, also including (on either of those two levels) German-speaking Austrians and German-speaking Swiss people, many of who may not self-identify as strictly "German", while still belonging to the wider family of contemporary Germanic peoples.