This paper works out some of the basic properties of an economy with energy as a factor of production. The economy now consists of streams of energy conversions that direct energy to the production of goods and services. The focus on energy generates a variety of insights. It yields a new...

According to the widely known 'culture of honor' hypothesis from social psychology, traditional herding practices are believed to have generated a value system that is conducive to revenge-taking and violence. We test this idea at a global scale using a combination of ethnographic records,...

We use databases we have created from the records of New York's Emigrant Savings Bank, founded by pre-Famine Irish immigrants and their children to serve Famine era immigrants, to study the social mobility of bank customers and, by extension, Irish immigrants more generally. We infer that New...

This paper develops an industrial-organizational framework for understanding how violence shapes wealth and institutions. In the modeled Hobbesian society, parties acquire wealth via violence or the threat of it. Under certain conditions they can Pareto improve their welfare by creating a...

How did religious freedom emerge? I address this question by building on the framework of Johnson and Koyama’s Persecution & Toleration: The Long Road to Religious Freedom (2019). First, I establish that premodern societies, reliant on identity rules, were incapable of liberalism and religious...

Why do some leaders invest in significant nation-building policies and others do not? Why does nation-building occur at certain junctures in time and not others? In our research, we investigate what motivates leaders to nation build. We argue that threats to their regime motivate rulers to...

This chapter evaluates the concept of legal capacity and how it is employed in research in historical political economy. I discuss its relationship to the wider literature on state capacity, research on the rule of law, and the literature on legal origins. I go on to outline how the concept of...

We estimate the self-selection of Mexican migrants into and out of the United States in the 1920s. Officials recorded migrant height on border crossing manifests, which we use to proxy migrant quality and to measure self-selection into migration in 1920. Migrants were positively selected on...

Economic growth in the 19th and 20th centuries, following the Industrial Revolutions, was much faster than in preceding centuries. This unprecedented global growth coincided with the global proliferation of democracy, with some evidence for bidirectional causation. Macroeconomic forecasts have...

This paper studies external sovereign bonds as an asset class. We compile a new database of 266,000 monthly prices of foreign-currency government bonds traded in London and New York between 1815 (the Battle of Waterloo) and 2016, covering up to 91 countries. Our main insight is that, as in...