Three-world model

Early in the Cold War era, NATO and the Warsaw Pact were created by the United States and the Soviet Union, respectively.

[5] In 1952, the French demographer Alfred Sauvy coined the term Third World in reference to the three estates in pre-revolutionary France.

Just as the third estate comprised everybody else, Sauvy called the Third World all the countries that were not in this Cold War division, i.e., the unaligned and uninvolved states in the "East–West Conflict.

"[6][4] The Third World countries are often described as developing nations with diverse economic, social, and political conditions.

The fourth world refers to "nations," e.g., cultural entities and ethnic groups, of indigenous people who do not compose states in the traditional sense.

The " Three Worlds " of the Cold War (between 30 April and 24 June 1975)
First World : Countries aligned with the Western Bloc (i.e., NATO and allies), led by the United States
Second World : Countries aligned with the Eastern Bloc (i.e., Warsaw Pact , China , and allies), led by the Soviet Union
Third World : The Non-Aligned Movement , led by India and Yugoslavia , and other neutral countries