Does not explain India where there is high genetic diversity and generally the South is more educated and wealthy

The reason that southern India is generally richer is very complicated.

GP was wondering if sun exposure triggers the education>wealth cycle. I’m not sure it does. Norway wasn’t particularly educated or wealthy in the ‘50s. Then they discovered they have oil and now they are both.

I think a combination of good policies and ideally some preexisting wealth will trigger this upwards cycle.