This note lays out the basic Susceptible-Infected-Recovered (SIR) epidemiological model of contagion, with a target audience of economists who want a framework for understanding the effects of social distancing and containment policies on the evolution of contagion and interactions with the...

Beliefs about whether effort pays off govern some of the most fundamental choices individuals make. This paper uses China's Cultural Revolution to understand how these beliefs can be affected, how they impact behavior, and how they are transmitted across generations. During the Cultural...

During the French Revolution, more than 100,000 individuals, predominantly supporters of the Old Regime, fled France. As a result, some areas experienced a significant change in the composition of the local elites whereas in others the pre-revolutionary social structure remained virtually...

Why did the most prosperous colonies in the British Empire mount a rebellion? Even more puzzling, why didn't the British agree to have American representation in Parliament and quickly settle the dispute peacefully? At first glance, it would appear that a deal could have been reached to share...

The French Revolution of 1789 had a momentous impact on neighboring countries. The French Revolutionary armies during the 1790s and later under Napoleon invaded and controlled large parts of Europe. Together with invasion came various radical institutional changes. French invasion removed the...

We study the emergence of urban self-governance during the Commercial Revolution in the 12th- 13th century and show that municipal autonomy shaped national institutions over the subsequent centuries. We focus on England after the Norman Conquest of 1066 and build a novel comprehensive dataset of...

We study the link between fiscal austerity and Nazi electoral success. Voting data from a thousand districts and a hundred cities for four elections between 1930 and 1933 shows that areas more affected by austerity (spending cuts and tax increases) had relatively higher vote shares for the Nazi...

Scholars have attempted to explain geographic clustering in inventive activity by arguing that it is connected with clustering in production or new investment. They have offered three possible reasons for this link: because invention occurs as a result of learning by doing; because new...