Migration is a key feature of a modern and open society. A new feature is that migration shows a high degree of heterogeneity and hence has various complex impacts on the economy. This paper aims to map out the causes and consequences of heterogeneous immigration flows. It sets out a policy...

All colonial powers granted concessions to private companies to extract natural resources during the colonial era. Within Africa, these concessions were characterized by indirect rule and violence. We use the arbitrarily defined borders of rubber concessions granted in the north of the Congo...

A growing literature relies on natural experiments to establish causal effects in macroeconomics. In diverse applications, natural experiments have been used to verify underlying assumptions of conventional models, quantify specific model parameters, and identify mechanisms that have major...