The Grand Transition (GT) view claims that economic development is causal to institutional development, and that many institutional changes can be understood as transitions occurring at roughly the same level (zones) of development. The Primacy of Institutions (PoI) view claims that economic...

Measures of corruption and income are highly correlated across countries. We use prehistoric measures of biogeography as instruments for modern income levels to identify an exogenous long-run income effect. We find that our corruption-free incomes explain the cross-country pattern of corruption...