
1) Country classification 2) The industrialized nations
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https://www.crosswordclues.com/clue/first-world

The concept of the First World originated during the Cold War, involving countries that were aligned with the United States, France and the United Kingdom. These countries were largely market economies and generally democracies. After the fall of the Soviet Union, the term `First World` arguably took on a new meaning, coming to be largely synony.....
Found on
http://en.wikipedia.org/wiki/First_World

The group of nation-states that possesses mature industrialized economies, based on capitalistic production.
Found on
http://www.encyclo.co.uk/local/20212

Former term for the industrialized
capitalist, or free-market, countries of the West. It was used during the
Cold ...
Found on http://www.encyclo.co.uk/local/20688

the major industrialized non-Communist nations, including those in Western Europe, the United States, Canada, and Japan. Cf. Second World, Third World, Fourth World.
Found on
https://www.infoplease.com/dictionary/first-world
No exact match found.