What is the impact of joining the European Union on a small, less developed economy? This is the general question driving this research paper. In particular, the role of factor movements in explaining real wage behavior in Portugal after its entry in the European Union (EU) is evaluated. Based...

Joining the EU is a natural experiment that drastically opens the borders of richer European countries to immigration.  However, migration flows from southern Europe responded little to  free migration after 1986, despite substantial differentials in real GDP per worker.  The simple...

I construct a theory of foreign interventions in which the political preferences of the foreign country are determined by its different economic ties with alternative local groups.  Stronger economic ties make a group more influenceable from the outside, and thus more willing to grant economic...

I construct a trade model of empire, and use it to interpret some of the key patterns in the history of European imperialism.  I begin from the observation that trade was a key source of wealth for the colonies, and trade restrictions a key tool of extraction for colonial powers.  But the...

Jewish emancipation in nineteenth century Europe produced drastically different responses.  In Germany, a liberal variant known as Reform developed, while ultra-Orthodox Judaism emerged in eastern Europe.  We develop a model of religious organization which explains this polarization.  In...

The latest World Bank estimates of real GDP per capita for China are significantly lower than previous ones.  We review possible sources of this puzzle and conclude that it reflects a combination of factors, including substitution bias in consumption, reliance on urban prices which we estimate...

Existing methods of reconstructing historical Euro-zone data by aggregation of the individual countries’ data raises numerous difficulties due to past exchange rate changes. The approach proposed here is designed to avoid such distortions, and aggregate exactly when exchange rates are...

Characteristics models have been found to be useful in many areas of economics. However, their empirical implementation tends to rely heavily on functional form assumptions. In this paper we develop a revealed preference approach to characteristics models. We derive the necessary and sufficient...