This paper explores the relationship between economic openness and income per person using cross-country data. To address endogeneity concerns we extend the instrumental-variables strategy first used by Frankel and Romer (1999). First, we show that bilateral geographic characteristics of...

This paper explores the relationship between openness to trade and to immigration on income per person. To address endogeneity concerns we extend the instrumental-variables strategy first used by Frankel and Romer (1999). We show that distance (geographical and cultural) can be used to build a...

This paper explores the relationship between openness to trade and to immigration on income per person. To address endogeneity concerns we extend the instrumental-variables strategy first used by Frankel and Romer (1999). We show that distance (geographical and cultural) can be used to build a...

The paper introduces the concept of social divergence, defined as the social barriers to communication and exchange between individuals and groups within a society, and analyses its impact on total factor productivity and per capita income. Using a cross section of 27 developing countries, total...

The articles explores how the way in which wars are being waged has changed since the 19th century. Its main focus is on ground warfare. Warfare, according to the thesis advocated in the article, has become industrialized within a few decades. One of the consequences was that since then only...