We provide new measures of ethnic, linguistic and religious fractionalization for about 190 countries. These measures are more comprehensive than those previously used in the economics literature and we compare our new variables with those previously used. We also revisit the question of the...

Normally, economists take the size of countries as an exogenous variable. Nevertheless, the borders of countries and their size change, partially in response to economic factors such as the pattern of international trade. Conversely, the size of countries influences their economic performance...