Eric Chaney of University of Oxford reviews “Conquests and Rents: A Political Economy of Dictatorship and Violence in Muslim Societies” by Faisal Z. Ahmed. The Econlit abstract of this book begins: “Examines how the institutional legacy of Muslim conquest is a robust determinant of less cohesive institutions in contemporary Muslim societies, detailing how variation in economic rents explain ebbs and flows of dictatorship and propensity for civil wars in these societies.”

Bruce M. S. Campbell's The Great Transition: Climate, Disease and Society in the Late-Medieval World is a significant contribution to the growing literature that traces the roots of Europe's economic rise to the climatic and population shocks of the late medieval period. This review essay discusses the empirical, historical, and theoretical support for Campbell's view while highlighting that it struggles to explain why these positive effects were limited to Europe. It then hypothesizes that Europe's differential response to this shock reflected prior institutional advantages and provides some preliminary empirical evidence in support of this hypothesis. The essay concludes by examining Campbell's claim that these shocks contributed to Atlantic Europe's rise prior to the colonial period. ( JEL I15, J11, J13, N13, N33, Q54)

Using centuries of Nile flood data, I document that during deviant Nile floods, Egypt's highest-ranking religious authority was less likely to be replaced and relative allocations to religious structures increased. These findings are consistent with historical evidence that Nile shocks increased this authority's political influence by raising the probability he could coordinate a revolt. I find that the available data provide support for this interpretation and weigh against some of the most plausible alternatives. For example, I show that while Nile shocks increased historical references to social unrest, deviant floods did not increase a proxy for popular religiosity. Together, the results suggest an increase in the political power of religious leaders during periods of economic downturn. [PUBLICATION ABSTRACT]