Borders are a man-made institution, and as such their shape cannot be taken as part of the physical landscape. The size of countries is endogenous to politico-economic forces. This paper discusses recent efforts by economists to study three related questions: What determines the evolution of the...

We survey and assess the literature on the positive and negative effects of ethnic diversity on economic policies and outcomes. Our focus is on communities of different size and organizational structure, such as countries, cities in developed countries, and villages and groups in developing...

In this paper, we collect detailed information on the budget institutions of Latin American countries. We classify these institutions on a "hierarchical"/"collegial" scale, as a function of the existence of constraints on the deficit, and voting rules. We show that "hierarchical" and transparent...

We study the effect of the level of inequality in society on individual well-being using a total of 123,668 answers to a survey question about “happinessâ€. We find that individuals have a lower tendency to report themselves happy when inequality is high, even after controlling for...

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

This paper considers an economy in which policymakers with different preferences alternate in office as a result of elections. Government debt is used strategically by each policymaker to influence the choices of his successors. If different policymakers disagree about the desired composition of...

Preferences for redistribution, as well as the generosity of welfare states, differ significantly across countries. This paper tests whether there exists a feedback process of the economic regime on individual preferences. We exploit the experiment of German separation and reunification to...

Common currencies affect trading costs and, thereby, the amounts of trade, output, and consumption. From the perspective of monetary policy, the adoption of another country's currency trades off the benefits of commitment to price stability (if a committed anchor is selected) against the loss of...

Bigger governments raise the possibilities for corruption; more corruption may in turn raise the support for redistributive policies that intend to correct the inequality and injustice generated by corruption. We formalize these insights in a simple dynamic model. A positive feedback from past...