We use recent immigration data from 195 countries and propose an index of population diversity based on people's birthplaces. This new index is then decomposed into a size (share of foreign born) and a variety (diversity of immigrants) component and is available for 1990 and 2000 disaggregated...

Employing a wide range of individual-level surveys, we study the extent of cultural and institutional heterogeneity within the EU and how this changed between 1980 and 2008. We present several novel empirical regularities that paint a complex picture. While Europe has experienced both systematic...

The nation-state system, democratic politics, and full economic integration are mutually incompatible. Of the three, at most two can be had together. The Bretton Woods/GATT regime was successful because its architects subjugated international economic integration to the needs and demands of...

We investigate jointly the importance of contemporary country-level institutional structures and local ethnic-specific pre-colonial institutions in shaping comparative regional development in Africa. We utilize information on the spatial distribution of African ethnicities before colonization...

Nations stay together when citizens share enough values and preferences and can communicate with each other. Homogeneity amongst people can be built with education, teaching a common language, building infrastructure for easier travel, but also by brute force such as prohibiting local cultures...

The global financial crisis which erupted in the United States instantaneously swept across Europe. Like the United States, the European Monetary Union (EMU) was ripe for a crash. It had its own real estate bubble, specifically in Ireland and Spain, indulged in excessive deficit spending,...

In an interconnected world, national economic policies regularly lead to large international spillover effects, which frequently trigger calls for international policy cooperation. However, the premise of successful cooperation is that there is a Pareto inefficiency, i.e. if there is scope to...