In Asia inequality in income between countries is more important than inequality within countries. In Africa, Latin America, and western Europe and North America, by contrast, there are only small differences between countries; inequality within countries is more important. And when countries...

Ideology, as proxied by a country's dominant religion, seems to be related to inequality. In Judeo-Christian societies increased democratization appears to lower inequality; in Muslim and Confucian societies it has an insignificant effect. One reason for this difference may be that Muslim and...