According to David Easton, "A political system can be designated as the interactions through which values are authoritatively allocated for a society".
Anthropological classification
Anthropologists generally recognize four kinds of political systems, two of which are uncentralized and two of which are centralized.
** A sovereign state is a state with a permanent population, a defined territory, a government and the capacity to enter into relations with other sovereign states.
* Supranational political systems are created by independent nations to reach a common goal or gain strength from forming an alliance.
Empires
* Empires are widespread states or communities under a single rule. They are characterized by the rulers desire for unanimous religious affiliation or posing as threat for other empires in times of war.* Empires often made considerable progress in ways of democratic structures, creating and building city infrastructures, and maintaining civility within the diverse communities. Because of the intricate organization of the empires, they were often able to hold a large majority of power on a universal level.*
Leagues
* Leagues are international organizations composed of states coming together for a single common purpose.* In this way leagues are different from empires, as they only seek to fulfill a single goal. Often leagues are formed on the brink of a military or economic downfall. Meetings and hearings are conducted in a neutral location with representatives of all involved nations present.
Sociology
The sociological interest in political systems is figuring out who holds power within the relationship of the government and its people and how the government’s power is used. There are three types of political systems that sociologists consider:
* In authoritarian governments, the people have no power or representation and it is characterized by absolute or blind obedience to formal authority, as against individual freedom and related to the expectation of unquestioning obedience. The elite leaders handle all economic, military, and foreign relations. A prime example of authoritarianism is a dictatorship.
* Totalitarianism is the most extreme form of authoritarianism because it controls all aspects of life including the communication between citizens, media censorship, and threatens by the means of terror.
* A democracy is a form of government in which the citizens create and vote for laws directly, or indirectly via representatives. The idea of democracy stems back from ancient Greece and the profound works of ancient academics. However, the presence of democracy does not always mean citizen’s wishes will be equally represented. For example, in many democratic countries immigrants, and racial and ethnic minorities, do not receive as the majority citizens.