Why Nations Fail: The Origins of Power, Prosperity, and Poverty

about an institutional interpretation of history, the second level is about how history has shaped institutional trajectories of nations.
    Central to our theory is the link between inclusive economic and political institutions and prosperity. Inclusive economic institutions that enforce property rights, create a level playing field, and encourage investments in new technologies and skills are more conducive toeconomic growth than extractive economic institutions that are structured to extract resources from the many by the few and that fail to protect property rights or provide incentives for economic activity. Inclusive economic institutions are in turn supported by, and support, inclusive political institutions, that is, those that distribute political power widely in a pluralistic manner and are able to achieve some amount of political centralization so as to establish law and order, the foundations of secure property rights, and an inclusive market economy. Similarly, extractive economic institutions are synergistically linked to extractive political institutions, which concentrate power in the hands of a few, who will then have incentives to maintain and develop extractive economic institutions for their benefit and use the resources they obtain to cement their hold on political power.
    These tendencies do not imply that extractive economic and political institutions are inconsistent with economic growth. On the contrary, every elite would, all else being equal, like to encourage as much growth as possible in order to have more to extract. Extractive institutions that have achieved at least a minimal degree of political centralization are often able to generate some amount of growth. What is crucial, however, is that growth under extractive institutions will not be sustained, for two key reasons. First, sustained economic growth requires innovation, and innovation cannot be decoupled from creative destruction, which replaces the old with the new in the economic realm and also destabilizes established power relations in politics. Because elites dominating extractive institutions fear creative destruction, they will resist it, and any growth that germinates under extractive institutions will be ultimately short lived. Second, the ability of those who dominate extractive institutions to benefit greatly at the expense of the rest of society implies that political power under extractive institutions is highly coveted, making many groups and individuals fight to obtain it. As a consequence, there will be powerful forces pushing societies under extractive institutions toward political instability.
    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 associatedwith 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 institutional differences among societies themselves are a result of past institutional changes. Why does the path of institutional change differ across societies? The answer to this question lies in institutional drift. In the same way that the genes of two isolated populations of organisms will drift apart slowly because of random mutations in the so-called process of evolutionary or genetic drift, two otherwise similar societies will also drift apart institutionally—albeit, again, slowly. Conflict over income and power, and