“The West won the world not by the superiority of its ideas or values or religion, but rather by its superiority in applying organized violence. Westerners often forget this fact; non-Westerners never do.”
https://en.wikipedia.org/wiki/Third_World#Etymology
While often used in condescending or pejorative ways...do consider what happened to the French First Estate and Second Estate during the French Revolution.
"Third world" actually seems like an euphemism to me. It makes me think of a race and gives you the false hope of improving in the future by just playing along the same game.
False hope for the downtrodden, if they just keep playing the game - that was an age-old feature of human society, back when they were stuck building pyramids for their dear departed betters.
OTOH, a number of nations which seemed hopelessly stuck at the bottom of the pyramid back in 1952 are now doing pretty well, some even by First World standards.
What he masterminded in Angola and several other African countries that ended up in civil wars because of him are some of the greatest atrocities to people of the third world.
I wish history would remember as such, but hey, we don't write the history, they did.