Does foreign military assistance strengthen or further weaken fragile states facing internal conflict? Aid may strengthen the state by bolstering its repressive capacity vis-à-vis armed non-state actors, or weaken it if resources are diverted to these very groups. We examine how U.S. military...

This paper provides the first systematic analysis of the link between economic, political, and social conditions and the global phenomenon of ISIS foreign fighters. We find that poor economic conditions do not drive participation in ISIS. In contrast, the number of ISIS foreign fighters is...

We show that armed actors refrain from using their power to arbitrarily steal from an economy if, and only if, the armed actors' property rights over stealing from that economy are secure. By 2009, armed actors taxed, administered, and protected various villages in Democratic Republic of the...

How do elites mobilize commoners to participate in a war? How does war mobilization affect elite power after the war? We argue that these two questions are interconnected, as elites mobilize war often because war benefits them. We demonstrate these relationships using the setting of the...

The US Civil War ended in 1865 without the distribution of land or compensation to those formerly enslaved--a decision often seen as a cornerstone of racial inequality. We build a dataset to observe Black households' landholdings in 1880, a key component of their wealth, alongside a sample of...

Debilitating events could leave either frailer or more robust survivors, depending on the extent of scarring and mortality selection. The majority of empirical analyses find frailer survivors. I find heterogeneous effects. Among severely stressed former Union Army POWs, which effect dominates 35...

Miguel, Satyanath and Sergenti (2004) use rainfall variation as an instrument to show that economic growth is negatively related to civil conflict in sub-Saharan Africa. In the reduced form regression they find that higher rainfall is associated with less conflict. Ciccone (2010) claims that...

A recent paper by Burke et al. (henceforth "we") finds a strong historical relationship between warmer- than-average temperatures and the incidence of civil war in Africa (Burke et al. 2009). These findings have recently been challenged by Buhaug (2010) who finds fault with how we controlled for...

This paper analyzes a five percent systematic sample of households from the manuscripts of the New York State Census of 1865, the first in the United States to ask a question on children ever born. The sample of seven counties (Allegany, Dutchess, Montgomery, Rensselaer, Steuben, Tompkins, and...