Usually,
sovereign states have several levels of administrative division. Common names for the principal (largest) administrative divisions include:
states (subnational states, rather than sovereign states),
provinces,
lands,
oblasts and
regions. These in turn are often subdivided into smaller administrative units known by names such as
comarcas,
raions or
districts, which are further subdivided into
municipalities,
communes or communities constituting the smallest units of subdivision (the
local governments). Some administrative division names (such as
departments,
cantons,
prefectures,
counties or
governorates) can be used for principal, second-level, or third-level divisions. The levels of administrative divisions and their structure largely varies by country (and sometimes within a single country). Usually the smaller the country is (by area or population), the fewer levels of administrative divisions it has. For example,
Vatican City does not have any administrative subdivisions, and
Monaco has only one level (both are
city-states), while such countries as
France and
Pakistan have five levels each. The
United States is composed of states, possessions,
territories, and a
federal district, each with varying numbers of subdivisions. The principal administrative division of a country is sometimes called the "
first-level (or
first-order) administrative division" or "first administrative level". Its next subdivision might be called "second-level administrative division" or "second administrative level" and so on. An alternative terminology is provided by the
Nomenclature of Territorial Units for Statistics which terms the principal division as the second level or NUTS-2. Communities united in a
federation under a federal government are more specifically known as
federated states. A federated state may be referred to as a province, region, canton, land, governorate, oblast, emirate, or country. Administrative units that are not federated or confederated but enjoy a greater degree of autonomy or self-government than other territories within the same country can be considered
autonomous regions or de facto constituent states of that country. This relationship is by some authors called a
federacy or
asymmetric federalism. An example is the autonomous republic of
Karakalpakstan within
Uzbekistan. == Examples ==