>Even in Africa, the correlation is apparent. The countries bordering the Mediterranean all have low diversity and high development, compared to almost all othe

>Even in Africa, the correlation is apparent. The countries bordering the Mediterranean all have low diversity and high development, compared to almost all other African countries. Okay, let's examine this assumption, comparing your first map (diversity) with the map you reference in this comment (HDI). First, Africa: Consider southern Africa. South Africa is the most ethnically diverse country in this region; it also has the highest HDI. The two more homogeneous countries north of it, Botswana and Zimbabwe, are not outliers in their neighborhood when it comes to the HDI score. Let's look to Western Africa: along the Ivory Coast we see a number of relatively high-diversity countries, but their diversity scores relative to each other are not well-correlated with their HDI scores. In the Arab World, Northern Africa through to the Middle East, we also see poor correlation between diversity and HDI: Algeria, Libya, and Egypt are relatively wealthy and homogeneous, but Saudi Arabia is wealthier than any of them and has higher diversity; Yemen is both one of the poorest countries and most homogeneous in the region. In Middle Asia, compare China to Kazakhstan: both are high HDI (Kazakhstan scores higher), but China is more homogeneous and Kazakhstan is more diverse. In the Mediterranean, the correlation is somewhat stronger but still has numerous counterpoints; Bosnia and Herzegovina is the most diverse country in the region but it's HDI scores comparably to its neighbors to the south and east. And, again, moving slightly north, Switzerland is the highest scoring country on the HDI in Europe and is also among the most diverse. Your methodology is very weak and your conclusions make no sense.