Why are there more super-rich people in some countries than in others? Extra-ordinary wealth is often regarded with envy and might raise the suspicion that it can only be accumulated with the help of a minimalist state that does not concern itself with the plight of the many. This raises the...

A number of studies have tested whether, globally, per capita incomes are converging over time. To date, the majority of studies find no evidence of absolute convergence, but many find evidence of conditional convergence, i.e. convergence having controlled for differences in technological and...