[bohadi]

Don't know where you're from or your experience but you maybe want to update your priors on the meaning term first world, which peaked in usage roughly 1948...

https://books.google.com/ngrams/graph?content=first+world&ye...

The mean and median living some places might surprise you. For example visit HongKong, Singapore, Taipei, Tokyo, or a mainland city this millenium. Or dont'!

First world, it mostly conjures automobile culture and car infrastructure which is nothing special these days but check the world's largest car makers... you would guess Germany Japan or even the USA recently no?