Acemoglu, Johnson, Robinson, and Yared (2008) demonstrate that estimation of the standard adjustment model with country-fixed and time-fixed effects removes the statistical significance of income as a causal factor of democracy. We argue that their empirical approach must produce insignificant...

The paper considers the transformation of the political system as countries pass through the Grand Transition from a poor developing country to a wealthy developed country. In the process most countries change from an authoritarian to a democratic political system. This is shown by using the...