Artificial states are those in which political borders do not coincide with a division of nationalities desired by the people on the ground. We propose and compute for all countries in the world two new measures how artificial states are. One is based on measuring how borders split ethnic groups...

Politicians may use disguised' redistributive policies in order to circumvent opposition to explicit tax-transfer schemes. First, we present a theoretical model that formalizes this hypothesis; then we provide evidence that in US cities, politicians use public employment as such a redistributive...

We present a model that links heterogeneity of preferences across ethnic groups in a city to the amount and type of public good the city supplies. We test the implications of the model with three related datasets: US cities, US metropolitan areas, and US urban counties. Results show that...

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...