where does the phrase third world come from
Third World The term Third World was formulated in 1952 by French economic historian Alfred Sauvy to mean countries that were neither part of the West nor of the Iron Curtain.[3] Thus the term originally had a political meaning as it arose during the Cold War to define countries that remained non-aligned with either NATO or the Communist Bloc. The United States, Canada, Japan, South Korea, Western European nations and their allies represented the First World, while the Soviet Union, China, Cuba and their allies represented the Second World. This terminology provided a way of broadly categorizing the nations of the Earth into three groups based on political and politically-related economic divisions.
Three-sector theory The three-sector theory is an economic theory which divides economies into three sectors of activity: extraction of raw materials (primary), manufacturing (secondary), and services (tertiary). It was developed by Allan Fisher, Colin Clark and Jean Fourastié.