Does U.S. military aid make the United States safer? To answer this question, we collect data on 173 countries between 1968 and 2014. Exploiting quasi-random variation in the global patterns of U.S. military aid, our paper is the first to provide causal estimates of the effect of U.S. military...

This chapter discusses the role of military interventionism and aid in nation-building. We argue that (1) intervention strategies of foreign actors like the United States often unfavorably interact with local institutional settings, which (2) produces undesired outcomes not only for the target...

We study the consequences of franchise extension and ballot reform for the size of government in Western Europe between 1820 and 1913. We find that franchise extension exhibits a U-shaped association with revenue per capita and a positive association with spending per capita. Instrumental...

We study how financial frictions affect firm-level heterogeneity and trade. We build a model where productivity differences across monopolistically competitive firms are endogenous and depend on investment decisions at the entry stage. By increasing entry costs, financial frictions lower the...

This paper uses a gravity framework to investigate the effects of distance as well as subnational and national borders in knowledge spillovers. Drawing on the NBER Patent Citations Database, we examine patent citations data at metropolitan level within the U.S. and the 38 largest patent-cited...