south koreans have the 2nd highest IQ's of all the worlds people, north korea is listed as NA (i guess not applicable) they are below 59.
why such a difference dont koreans share the same genetics? and isnt the border at the 38th paralel between north and south korea just a line politicians drew?
is it because north koreans dont have freedom to travel? and/or they dont educate them, so they stay dumb and are not as much of a threat to overthrow the government?
double the IQ for basically the same people with the same ancestors etc. is amazing.