section_path: Definition/Types of states
section_name: Types of states
paragraph_text: Types of states
  
  Charles Tilly distinguished between empires, theocracies, city-states and nation-states. According to Michael Mann, the four persistent types of state activities are:
  
  Josep Colomer distinguished between empires and states in the following way:
  
  According to Michael Hechter and William Brustein, the modern state was differentiated from "leagues of independent cities, empires, federations held together by loose central control, and theocratic federations" by four characteristics:
  
  States may be classified by political philosophers as sovereign if they are not dependent on, or subject to any other power or state. Other states are subject to external sovereignty or hegemony where ultimate sovereignty lies in another state. Many states are federated states which participate in a federal union. A federated state is a territorial and constitutional community forming part of a federation. (Compare confederacies or confederations such as Switzerland.) Such states differ from sovereign states in that they have transferred a portion of their sovereign powers to a federal government.
  
  One can commonly and sometimes readily (but not necessarily usefully) classify states according to their apparent make-up or focus. The concept of the nation-state, theoretically or ideally co-terminous with a "nation", became very popular by the 20th century in Europe, but occurred rarely elsewhere or at other times. In contrast, some states have sought to make a virtue of their multi-ethnic or multinational character (Habsburg Austria-Hungary, for example, or the Soviet Union), and have emphasised unifying characteristics such as autocracy, monarchical legitimacy, or ideology. Other states, often fascist or authoritarian ones, promoted state-sanctioned notions of racial superiority. Other states may bring ideas of commonality and inclusiveness to the fore: note the res publica of ancient Rome and the Rzeczpospolita of Poland-Lithuania which finds echoes in the modern-day republic. The concept of temple states centred on religious shrines occurs in some discussions of the ancient world. Relatively small city-states, once a relatively common and often successful form of polity, have become rarer and comparatively less prominent in modern times. Modern-day independent city-states include Vatican City, Monaco, and Singapore. Other city-states survive as federated states, like the present day German city-states, or as otherwise autonomous entities with limited sovereignty, like Hong Kong, Gibraltar and Ceuta. To some extent, urban secession, the creation of a new city-state (sovereign or federated), continues to be discussed in the early 21st century in cities such as London.