This research advances the hypothesis and establishes empirically that interpersonal population diversity has contributed significantly to the emergence, prevalence, recurrence, and severity of intrasocietal conflicts. Exploiting an exogenous source of variations in population diversity across...

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...

This research advances the hypothesis and establishes empirically that interpersonal population diversity, rather than fractionalization or polarization across ethnic groups, has been pivotal to the emergence, prevalence, recurrence, and severity of intrasocietal conflicts. Exploiting an...

The specific way the Athenians set up their democracy presents both theoretical and empirical challenges. Decisions were taken by majority vote in the Assembly. To keep politicians in line, the Athenians first used ostracism, which however was replaced by the graphe paranomon around 415 BCE. The...

John Maynard Keynes became world famous with the publication of The Economic Consequences of the Peace in 1919, a harsh critique of the Versailles peace treaty. As a consequence, Keynes was nominated by German professors in economics for the Nobel Peace Prize three years in a row, 1922, 1923 and...

The G20 has emerged as a premier deliberative forum, involving leaders of some of the largest, systematically important countries of the world. Over the years, the G20 agenda has evolved to include pertinent issues for both developed countries and the emerging market economies. After the G20...

When Covid-19 was declared as a pandemic, countries administered lockdowns and stimulus packages were announced to address the deteriorating situation. For implementing these packages, routine control measures were simplified and often relaxed. The G20 countries were quick to react by...

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...

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....

This paper develops an economic theory of empire building. This theory addresses the choice among three strategies that empire builders historically have used. We call these strategies Uncoerced Annexation, Coerced Annexation, and Attempted Conquest. The theory yields hypotheses that relate the...