List of forms of government
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Representative democracy
Absolute monarchy
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A monarchy, from the Greek μονος, "one", and αρχειν, "to rule", is a form of government in which a monarch, usually a single person, is the head of state.
In most monarchies, the monarch holds their position for life (in some republics the head of state, often styled president, also remains in office for life, but in most is elected for a term of office, after which he or she must step down). There are currently 31 monarchs reigning over 45 extant sovereign monarchies in the world; the disconnect in numbers between monarchs and countries is explained by the fact that the sixteen Commonwealth Realms - vast geographic areas including the trans-continental realms of Canada and Australia - are separately reigned over in personal union by one person, and one other monarchy, Andorra, by two non-resident (French and Spanish) co-monarchs.
The term monarchy is also used to refer to the people (especially the dynasty, also known as royalty) and institutions that make up the royal or imperial establishment, or to the realm over which the monarch reigns.
Monarchs serve as symbols of continuity and statehood. Today, the extent of a monarch's actual powers varies from monarchy to monarchy. In constitutional monarchies, wherein sovereignty rests formally with the crown but politically with 'the people' (usually the electorate, as represented by a parliament), the monarch now usually serves largely ceremonial functions, except in times of crisis. Many monarchies are constituted by tradition or by codified law, so that the monarch has little real political power; in others the monarch holds some power but is limited from exercising it by popular or precedential opinion; in still others the monarch holds substantial power and may exercise it without limit.
Monarchy is one of the oldest forms of government, with echoes in the leadership of tribal chiefs. Many monarchs once claimed to rule by divine right, or at least by divine grace, ruling either by the will of the god(s) or even claiming to be (incarnated) gods themselves; cfr. theocracy. Monarchs have also been selected by election (either in a broad popular assembly, as in Germanic tribal states; or by a small body, such as in the Holy Roman Empire; or by dynastic succession; or by conquest as in Malaysia and the UAE; or a combination of any number of ways). In some early systems the monarch was overthrown or sacrificed when it became apparent that divine sanction had been withdrawn.
Since 1800, most of the world's monarchies have been abolished by dismemberment or annexation, or have been transformed into republics; most current countries that are monarchies are constitutional ones. Among the few states that retain a rather absolute monarchy are Bhutan, Brunei, Oman, Qatar, Saudi Arabia, Swaziland and the Vatican City (the papal city-state, an electoral theocracy). In Jordan and Morocco, the monarch also retains considerable power. There are also recent (2003) developments in Liechtenstein, wherein the regnant prince was given the constitutional power to dismiss the government at will. Nepal had several swings between constitutional rule and direct rule related to the Maoist rebel movement and killings by a suicidal crown prince.

Anarchism
Aristocracy
Authoritarianism
Autocracy
Communist state
Democracy
Despotism
Dictatorship
Fascism
Feudalism
Hierocracy
Kleptocracy
Kritarchy
Krytocracy
Meritocracy
Monarchy
Ochlocracy
Oligarchy
Plutocracy
Republic
Single-party state
Thalassocracy
Theocracy
Timocracy
Totalitarianism
Tyranny Types of Monarchy
The rules for selection of monarchs varies from country to country. In constitutional monarchies the rule of succession is generally embodied in a law passed by a representative body, such as a parliament.
Elective monarchies, distinguished by the monarchs being appointed for life, have in most cases been succeeded by hereditary monarchies, but both secular sovereign nation cases at present - those of Malaysia and the United Arab Emirates - are 20th-century creations. In the hereditary system, the position of monarch involves inheritance according to an order of succession, usually within one royal family tracing its origin back to a historical dynasty or bloodline. In some cases the ruling family may claim to hold authority by virtue of the associated god's choosing, as reflected in the style-phrase "by the Grace of God," or other religion-based authority.
The order of succession in most European monarchical states of the 21st century is by primogeniture, meaning that either the eldest child of the monarch or the eldest son of the monarch is first in line. Currently, there is some controversy over the succession laws of some monarchies such as that of the United Kingdom (UK), Canadian, or the Scandinavian monarchies, which require their monarch to be of a certain faith (in the Commonwealth Realms under the Act of Settlement 1701). This has been challenged as violating European Union rules that prohibit religious disqualification for positions of state authority, as well as a violation of the Canadian Charter of Rights and Freedoms.
Historically, successions in dependent states could be subject to the assent of the (colonial or other) dominant power, which then often reserved the right to dethrone (and replace) a 'disloyal' incumbent.

Succession
Official styles and titles of monarchs often reflect the ambitions and ideals of the governments they head or represent and actual historical ties or claims to territories no longer under their administration or even extinguished as political units.
Some titles are specifically designed to express a relative rank, usually higher if self-assumed, as in the case of King of Kings and various equivalents, or Tipu Sultan who assumed the rank Padshah Bahadur when declaring his new Muslim empire Khudadad independent from the Mughal Padshah, it has no other meaning then 'in rank above Padhsah'. Some monarchic titles suggest a unique exalted rank, even universal supremacy, such as the Caliph, and yet there may be parallel dynasties, e.g. a branch of the Umayyad in Cordoba while the Oriental caliphate had been take over by the Abassids (in Baghdad). Other titles are perceived as carrying a protocolary rank, so granting (often as a reward for a loyal vassal) or assuming (as an assertion) a higher title can mean a 'promotion' regardless of political reality.
Additional elements in the full style may refer to the legitimation of the throne, either directly as by a phrase like "by the Grace of God," or indirectly by referring to a legitimating function, such as protecting the official religion, e.g. for a Muslim ruler by the style Commander of the faithful. The Protestant Successors to Henry VIII of England have all retained the "Defender of the Faith" originally granted by the Pope to Henry VIII Tudor before the 'annulment crises' lead to the Anglican Schism.
Queen Elizabeth II is "by the Grace of God, Queen" in fifteen of her sixteen realms, only Papua New Guinea omitting this phrase from her title there. During Spain's transition to a constitutional monarchy under Isabella II, her Style was changed from the 'Long Form' which included "by the Grace of God" and some 20 states to "By divine grace and the constitution, queen of the Spains".
The kings and queens of England and Great Britain retained the title King of France until the union with Ireland to form the United Kingdom in 1801, during the reign of King George III. The kings and queens of Spain retained a long list of kingdoms, that didn't include Spain until Isabella II in 1837. The Council of Ministers (1987) authorized Juan Carlos I, King of Spain, to also use "historical titles," presumably including the crusader relict King of Jerusalem.

Titles as Political Statements
Monarchies can come to an end in several ways. There may be a revolution in which the monarchy is overthrown; or, as in Italy, the electorate decides to form a republic by constitutional referendum. In some cases, as with England and Spain, the monarchy has been overthrown and later restored. After the abdication of Napoleon I, which ended the First Empire, the French restored the royal Bourbon dynasty which had been abolished by the republic within which Napoleon had established the Empire. At the same time, his emperorship was "revived" outside France, as a "golden cage" principality was created for him on the island of Elba, so in a sense the empire was succeeded by a kingdom and an emperor without an empire.
Dependent monarchies have been abolished by their dominant power, often for the purposes of being fully annexed, split or merged with another. In Uganda, for example, local tribal monarchies were abolished when the country became a unitary state.
The most recent monarchy to be abolished was the former Commonwealth Realm monarchy of Mauritius in 1992. In 1999 Australians voted to keep their status as a monarchy under Queen Elizabeth II.
Countries may regard themselves as monarchies even without an actual monarch on the vacant throne, as Spain did from 1947 to 1975, and Hungary from 1920 to 1946.
A person who can be taken into consideration as future monarch in case of restoration of monarchy (or who even claims to be the legitimate heir to the throne of a deposed or in the royalist view suspended monarchy) is called a pretender, but that term also applies to a rival claimant of a filled throne, such as the several Russians who claimed to be a Tsar simultaneously.
See also abolished monarchy for a list of recently-abolished monarchies.

Demise of monarchies
Sometimes, component members of federal states are monarchies, even though the federal state as a whole is not; for example each of the emirates that form the United Arab Emirates has its own monarch (an emir). Another unique situation is Malaysia, in which the federal king, called the Yang di-Pertuan Agong or Paramount Ruler, is elected for a five year term from and by the hereditary rulers (mostly sultans) of nine of the federation's constitutive States, all on the Malay peninsula.
In addition to his ecclesiastical role as Supreme Pontiff of all Christians worldwide in communion with the Bishop of Rome, the Pope is ex officio the absolute monarch of Vatican City, the last truly sovereign Prince of the Church. He is elected by (and customarily from among) the College of Cardinals. (Since the Catholic episcopate is celibate, naturally there can be no official hereditary succession to the papal throne.) Notwithstanding this, the papacy has at times been under the control of powerful Italian families. Several popes have been succeeded by near relatives (officially described as Nepotes, literally 'nephews').
Andorra is the world's only co-principality: it had two co-princes: the Bishop of Urgell in Spain (thus a Prince-Bishop), and the President of France—a unique case where an independent country's Monarch is democratically elected by the citizens of another country, which is not even in full personal union.
Since 1947, the Emperors of Japan have reigned as neither sovereign, nor the de jure head of state. Emperor Hirohito having ceded sovereignty to the people shortly after World War II, the Japanese monarchy is bound by supreme law as opposed to constitutional convention under the provisos of the Constitution of Japan.

Unusual Monarchies
Early societies may become oligarchies as an outgrowth of an alliance between rival tribal chieftains or as the result of a caste system. Oligarchies can often become instruments of transformation, by insisting that monarchs or dictators share power, thereby opening the door to power-sharing by other elements of society (while oligarchy means "the rule of the few," monarchy means "the rule of the one"). One example of power-sharing from one person to a larger group of persons occurred when English nobles banded together in 1215 to force a reluctant King John of England to sign the Magna Carta, a tacit recognition both of King John's waning political power and of the existence of an incipient oligarchy (the nobility). As English society continued to grow and develop, the Magna Carta was repeatedly revised (1216, 1217, and 1225), guaranteeing greater rights to greater numbers of people, thus setting the stage for English constitutional monarchy.
Oligarchies may also evolve into more autocratic or monarchist forms of government, sometimes as the result of one family gaining ascendancy over the others. Many of the European monarchies established during the late Middle Ages began in this way.

Monarchy and Oligarchy

Arguments for and against monarchies
Monarchists rely amongst others to the following arguments:

A (future) monarch is considered as more competent for the office than an elected president because of his possibility to be prepared from childhood on.
A monarchy can be lower-cost than a republic because of missing presidential elections and the fact the familial fortune may suffice to supply the imperial/royal family so that additional official benefits can be economized (in contrast to the republican system in which imcumbent and former presidents have to been paid domicile, pension, bureau and official car by the exchequer).
Presidential elections expose future Head of states to the habitual competition during periods of election campaigns. Monarchists consider this as very damaging for the reputation of a Head of state.
The fact that a future president normally belongs to a political party is contradictory to a Head of state's function as neutral representative of the country and the people. Only a non-party monarch is seen as able to fulfill this role.
Presidents always have to act accordingly to their party's program and ideas while a monarch can reign independently of certain political directions.
A monarch is seen as a better (visible) symbol of national identity and unity.
The republic is blamed to produce political incertitude because of the permanent change of Head of States while monarchy serves as a symbol of continuity. Some monarchists argue that monarchy doesn't only serve as a symbol but even really guarantees political stability: They justify this point of view with the fact that abolition of monarchy often led to civil wars and the rise of totalitarian systems; for example, National Socialism in Germany, Jacobinism in France, Communism in Russia, and Maoism in China. Arguments against monarchies
Currently 45 nations in the world have monarchs as heads of state, 16 of which are Commonwealth Realms that formally recognize Queen Elizabeth II as their head of state and Prince Charles as heir.

Current monarchies of the world
Not only are the Monarchs of constitutive monarchies part of the federal establishment of both present elective monarchies (Malaysia, mainly sultanates, and the UAE, so named after its emirates), in many other modern states -often republics- tribal and other traditional states persist, with a dynasty that retains a court and often local prestige and influence; some are officially installed with the consent of the official government (as some of the many in Indonesia- waiting for the go-ahead can mean years of vacancy on the throne), others are merely condoned, or even in exile.
In many countries that are legally republics, an heir to the throne is recognized by the royalist part of the nation. A list of such countries is available in the pretender article.

See also

Australian Monarchy
Belgian monarchy
British Monarchy
Monarchies of Burma
Canadian Monarchy
List of Danish monarchs
Monarchies of Ethiopia
Cokossian Monarchy
Dutch monarchy
Emperor of Japan
Indonesian Monarchies
King of Ireland
Kotokolian Monarchy
New Zealand Monarchy
List of Nigerian traditional states
Norwegian monarchy
Datus of the Philippines
Monarch of Sweden
Tenkodogo Monarchy
Wogodogo Monarchy