Conventional wisdom in economic history suggests that conflict between countries can be enormously disruptive of economic activity, especially international trade. Yet nothing is known empirically about these effects in large samples. We study the effects of war on bilateral trade for almost all...

The econometric consensus on the effects of social spending confirms a puzzle we confront in the raw data: There is no clear net GDP cost of high tax-based social spending on GDP, despite a tradition of assuming that such costs are large. This paper offers five keys to this free lunch puzzle....

The debate over whether political democracy is the least bad regime, as Churchill once said, remains unresolved because history has been ignored or misread, and because recent statistical studies have not chosen the right tests. Using too little historical information, and mistaking formal...