The synergies between extractive economic and political institutions create a vicious circle, where extractive institutions, once in place, tend to persist. Similarly, there is a virtuous circle associated with inclusive economic and political institutions. But neither the vicious nor the virtuous circle is absolute. In fact, some nations live under inclusive institutions today because, though extractive institutions have been the norm in history, some societies have been able to break the mold and transition toward inclusive institutions. Our explanation for these transitions is historical, but not historically predetermined. Major institutional change, the requisite for major economic change, takes place as a result of the interaction between existing institutions and critical junctures. Critical junctures are major events that disrupt the existing political and economic balance in one or many societies, such as the Black Death, which killed possibly as much as half the population of most areas in Europe during the fourteenth century; the opening of Atlantic trade routes, which created enormous profit opportunities for many in Western Europe; and the Industrial Revolution, which offered the potential for rapid but also disruptive changes in the structure of economies around the world. Existing