>May be that's because Norway has a higher average IQ [1]. May be that's because Norway has a lower cultural diversity index [2]. May be cold climate is the fac

>May be that's because Norway has a higher average IQ [1]. May be that's because Norway has a lower cultural diversity index [2]. May be cold climate is the factor: those who didn't work froze to death way before industrial era. Here, the bit where you said that cold climate resulted in Norwegians have genetically higher intelligence than other countries.