Three Worlds Theory
In the field of international relations, the Three Worlds Theory (Chinese: 三个世界的理论; pinyin: Sān gè Shìjiè de Lǐlùn) by Mao Zedong proposed to the visiting Algerian President Houari Boumédiène in February 1974 that the international system operated as three contradictory politico-economic worlds. On April 10th 1974, at the 6th Special Session United Nations General Assembly, Vice-Premier Deng Xiaoping applied the Three Worlds Theory during the New International Economic Order presentations about the problems of raw materials and development, to explain the PRC's economic co-operation with non-communist countries.
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The First World comprises the United States and the Soviet Union, the superpower countries respectively engaged in imperialism and in social imperialism. The Second World comprises Japan, Canada, Europe and the other countries of the global North. The Third World comprises China, the countries of Africa, Latin America, and continental Asia.
As political science, the Three Worlds Theory is a Maoist interpretation and geopolitical reformulation of international relations, which is different from the Three-World Model, created by the demographer Alfred Sauvy in which the First World comprises the United States, the United Kingdom, and their allies; the Second World comprises the Soviet Union, the People's Republic of China, and their allies; and the Third World comprises the economically-underdeveloped countries, including the 120 countries of the Non-Aligned Movement (NAM).