The USA is, by definition, the first world. First world means, USA or it's NATO allies.
The second world is USSR and associated allies.
The third world is everyone else. Implying they are too insignificant to be allied to either. Which isn't necessarily the case. Finland and Sweden are technically "third world" countries, as they are not NATO members.
bruh what I meant is obvious no need for such truisms. Third world can be intended to mean a pejorative qualiticative of weakness, here the U.S has become third world-like regarding nuclear energy knowledge and production, basically synonymous to irrelevant.
Aso your rigid and off-topic definition does not scale in a multipolar world with new powers and changing dynamics, e.g China
