Originally, First World--US Second World--Soviet Union Third World--Non-aligned nations that gained independence from colonial rule beginning after world war II from the western nations and from those that formed the former eastern bloc, and sometimes more specifically from the united states and from the former soviet union. For the most part the term has not included China. politically, the third world emerged at the bandung conference (1955), which resulted in the establishment of the nonaligned movement. ================= Later on, the third worls implied to all the developing and poor nations. LooTe