a certain group has been placed in power in a legal manner, and that their actions are justifiable according to a specific code of written laws. Weber believed that the modern state is characterized primarily by appeals to rational-legal authority. State failure Some states are often labeled as "weak" or "failed". In David Samuels's words "...a failed state occurs when sovereignty over claimed territory has collapsed or was never effectively at all". Authors like Samuels and Joel S. Migdal have explored the emergence of weak states, how they are different from Western "strong" states and its consequences to the economic development of developing countries. Early state formation To understand the formation of weak states, Samuels compares the formation of European states in the 1600s with the conditions under which more recent states were formed in the twentieth century. In this line of argument, the state allows a population to resolve a collective action problem, in which citizens recognize the authority of the state and this exercise the power of coercion over them. This kind of social organization required a decline in legitimacy of traditional forms of ruling (like religious authorities) and replaced them with an increase in the legitimacy of depersonalized rule; an increase in the central government's sovereignty; and an increase in the organizational complexity of the central government (bureaucracy). The transition to this modern state was possible in Europe around 1600 thanks to the confluence of factors like the technological developments in warfare, which generated strong incentives to tax and consolidate central structures of governance to respond to external threats. This was complemented by the increase of the production of food (as a result of productivity improvements), which allowed to sustain a larger population and so increased the complexity and centralization of states. Finally, cultural changes challenged the authority of monarchies and paved the way to the emergence of modern states. Late state formation The conditions that enabled the emergence of modern states in Europe were different for other countries that started this process later. As a result, many of these states lack effective capabilities to tax and extract revenue from their citizens, which derives in problems like corruption, tax evasion and low economic growth. Unlike the European case, late state formation occurred in a context of limited international conflict that diminished the incentives to tax and increase military spending. Also, many of these states emerged from colonization