Sorry to be off-topic, but this is not the first time I see using the phrases 'second world' and 'third world' incorrectly here. A third world country was a neutral or unaligned country in the cold war. [1]
Due to the complex history of evolving meanings and contexts, there is no clear or agreed-upon definition of the Third World.[1] Some countries in the Communist Bloc, such as Cuba, were often regarded as "Third World". Because many Third World countries were extremely poor, and non-industrialized, it became a stereotype to refer to poor countries as "third world countries", yet the "Third World" term is also often taken to include newly industrialized countries like Brazil, Russia, India and China (see also: BRIC).
But probably 95% of usage uses the term to mean developing or under developed country which is probably a better definition now (as in that meaning indicates what the author meant).
[1] https://en.wikipedia.org/wiki/Three-World_Model