Geography causes African countries to experience a ‘proximity gap’. To overcome this gap a ‘big push’ may be needed in infrastructure. The cross-border nature of such infrastructure requires regional cooperation in at least four issues: transport infrastructure, trade facilitation,...

This research examines the economic origins and spread of Islam in the Old World and uncovers two empirical regularities. First, Muslim countries and ethnic groups exhibit highly unequal regional agricultural endowments. Second, Muslim adherence is systematically higher along the pre-Islamic...