World inequality today exists because during the nineteenth and twentieth centuries some nations were able to take advantage of the Industrial Revolution and the technologies and methods of organization that it brought while others were unable to do so. Technological change is only one of the engines of prosperity, but it is perhaps the most critical one. The countries that did not take advantage of new technologies did not benefit from the other engines of prosperity, either. As we have shown in this and the previous chapter, this failure was due to their extractive institutions, either a consequence of the persistence of their absolutist regimes or because they lacked centralized states. But this chapter has also shown that in several instances the extractive institutions that underpinned the poverty of these nations were imposed, or at the very least further strengthened, by the very same process that fueled European growth: European commercial and colonial expansion. In fact, the profitability of European colonial empires was often built on the destruction of independent polities and indigenous economies around the world, or on the creation of extractive institutions essentially from the ground up, as in the Caribbean islands, where, following the almost total collapse of the native populations, Europeans imported African slaves and set up plantation systems. We