A government is the system or group of people governing an organized community, generally a state.
In the case of its broad associative definition, government normally consists of legislature, executive, and judiciary. Government is a means by which organizational policies are enforced, as well as a mechanism for determining policy. In many countries, the government has a kind of constitution, a statement of its governing principles and philosophy.
Democracy (from Ancient Greek: δημοκρατία, romanized: dēmokratía, from dēmos 'people' and krátos 'rule') is a form of government in which political power is vested in the people or the population of a state. Under a minimalist definition of democracy, rulers are elected through competitive elections while more expansive or maximalist definitions link democracy to guarantees of civil liberties and human rights in addition to competitive elections.
In a direct democracy, the people have the direct authority to deliberate and decide legislation. In a representative democracy, the people choose governing officials through elections to do so. The definition of "the people" and the ways authority is shared among them or delegated by them have changed over time and at varying rates in different countries. Features of democracy often include freedom of assembly, association, personal property, freedom of religion and speech, citizenship, consent of the governed, voting rights, freedom from unwarranted governmental deprivation of the right to life and liberty, and minority rights.
A monarchy is a hereditary form of government in which political power is legally passed on to the family members of the monarch, a head of state who rules for life. While monarchs gain their power depending on specific succession laws, they can also gain their authority via election.
Monarchies were the most common form of government until the 20th century, when republics replaced many monarchies, notably at the end of World War I. As of 2025, forty-three sovereign nations in the world have a monarch, including fifteen Commonwealth realms that share King Charles III as their head of state. Other than that, there is a range of sub-national monarchical entities. Most of the modern monarchies are constitutional monarchies, retaining under a constitution unique legal and ceremonial roles for monarchs exercising limited or no political power, similar to heads of state in a parliamentary republic.
A military junta (/ˈhʊntə, ˈdʒʌntə/ ) is a system of government led by a committee of military leaders. The term junta means "meeting" or "committee" and originated in the national and local junta organized by the Spanish resistance to Napoleon's invasion of Spain in 1808. The term is now used to refer to an authoritarian form of government characterized by a politically dominant group of military officers.
A presidential, strong-president, or single-executive system (sometimes also congressional system) is a form of government in which a head of government (usually titled "president") heads an executive branch that derives its authority and legitimacy from a source that is separate from the legislative branch. The system was popularized by its inclusion in the Constitution of the United States.
This head of government is often also the head of state. In a presidential system, the head of government is directly or indirectly elected by a group of citizens and is not responsible to the legislature, and the legislature cannot dismiss the president except in extraordinary cases. A presidential system contrasts with a parliamentary system, where the head of government (usually called a prime minister) derives their power from the confidence of an elected legislature, which can dismiss the prime minister with a simple majority.
Liberal democracy, also called Western-style democracy, or substantive democracy, is a form of government that combines the organization of a democracy with ideas of liberal political philosophy. Common elements within a liberal democracy are: elections between or among multiple distinct political parties; a separation of powers into different branches of government; the rule of law in everyday life as part of an open society; a market economy with private property; universal suffrage; and the equal protection of human rights, civil rights, civil liberties, and political freedoms for all citizens. Substantive democracy refers to substantive rights and substantive laws, which can include substantive equality, the equality of outcome for subgroups in society. Liberal democracy emphasizes the separation of powers, an independent judiciary, and a system of checks and balances between branches of government. Multi-party systems with at least two persistent, viable political parties are characteristic of liberal democracies.
Governmental authority is legitimately exercised only in accordance with written, publicly disclosed laws adopted and enforced in accordance with established procedure. To define the system in practice, liberal democracies often draw upon a constitution, either codified or uncodified, to delineate the powers of government and enshrine the social contract. A liberal democracy may take various and mixed constitutional forms: it may be a constitutional monarchy or a republic. It may have a parliamentary system, presidential system, or semi-presidential system. Liberal democracies are contrasted with illiberal democracies and dictatorships. Some liberal democracies, especially those with large populations, use federalism (also known as vertical separation of powers) in order to prevent abuse and increase public input by dividing governing powers between municipal, provincial and national governments. The characteristics of liberal democracies are correlated with increased political stability, lower corruption, better management of resources, and better health indicators such as life expectancy and infant mortality.
Autocracy is a form of government in which absolute power is held by one person, known as an autocrat. It includes both absolute monarchies and dictatorships, while it is contrasted with democracy and other forms of free government. The autocrat has total control over the exercise of civil liberties within the autocracy, choosing under what circumstances they may be exercised, if at all. Governments may also blend elements of autocracy and democracy, forming a mixed type of regime sometimes referred to as anocracy, hybrid regime, or electoral autocracy. The concept of autocracy has been recognized in political philosophy since ancient history.
Autocrats maintain power through political repression of any opposition and co-optation of other influential or powerful members of society. The general public is controlled through indoctrination and propaganda, and an autocracy may attempt to legitimize itself in the eyes of the public through appeals to political ideology, religion, birthright, or foreign hostility. Some autocracies establish legislatures, unfair elections, or show trials to further exercise control while presenting the appearance of democracy. The only limits to autocratic rule are practical considerations in preserving the regime. Autocrats must retain control over the nation's elites and institutions for their will to be exercised, but they must also prevent any other individual or group from gaining significant power or influence. Internal challenges are the most significant threats faced by autocrats, as they may lead to coups d'état.
A communist state, also known as a Marxist–Leninist state, is a form of government that combines the state leadership of a communist party, Marxist–Leninist political philosophy, and an official commitment to the construction of a communist society. Modern communism broadly grew out of the socialist movement in 19th-century Europe as a program to replace capitalism with a stateless, classless, and moneyless society, but its application as Marxism–Leninism began later in the Soviet Union under Joseph Stalin.
In the 20th century, several communist states were established, first in Russia with the Russian Revolution of 1917 and then in portions of Eastern Europe, Asia, and a few other regions after World War II. The institutions of these states were heavily influenced by the writings of Karl Marx, Friedrich Engels, Vladimir Lenin, Joseph Stalin and others. However, the political reforms of Soviet leader Mikhail Gorbachev known as Perestroika and socio-economic difficulties produced the revolutions of 1989, which brought down all the communist states of the Eastern Bloc bar the Soviet Union. The repercussions of the collapse of these states contributed to political transformations in the Soviet Union, Yugoslavia, and several other non-European communist states. Presently, there are five states which are officially communist in the world: China, Cuba, Laos, North Korea and Vietnam.
Aristocracy (from Ancient Greek ἀριστοκρατίᾱ (aristokratíā) 'rule of the best'; from ἄριστος (áristos) 'best' and κράτος (krátos) 'power, strength') is a form of government that places power in the hands of a small, privileged ruling class, the aristocrats.
Across Europe, the aristocracy exercised immense economic, political, and social influence. In Western Christian countries, the aristocracy was mostly equal with magnates, also known as the titled or higher nobility, however the members of the more numerous social class, the untitled lower nobility (petty nobility or gentry) were not part of the aristocracy.