Your whole argument is that low IQ leads to an undeveloped country rather than impoverishment leads to lower IQ. I don't think it is entirely one way.
IQ is also only one (mediocre) signal you are putting a lot of emphasis on. India does not score well, yet it is clearly emerging and has very successful individuals from mathematics to chess.
IQ is also only one (mediocre) signal you are putting a lot of emphasis on. India does not score well, yet it is clearly emerging and has very successful individuals from mathematics to chess.