Is there a biological explanation for this?

No.

But there is a cultural explanation deriving from a geographical explananation.

It really has to do with who is descended from Aryans and who isn't.

>hurr lets post fake data to make appear my country less of a shithole than what it actually is.

Nice try, Hungertindian.

en.wikipedia.org/wiki/IQ_and_the_Wealth_of_Nations#National_IQ_estimates

>warmer weather means you can survive easier

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>east Asians score higher
Lel

Almost like not being able to go to school will make you dumber.

>No

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Not biological but historical.

You disagree? We aren't talking about modern days here

Orientals are Aryans.