Federation
A federation is an entity characterized by a union of partially self-governing provinces, states, or other regions under a federal government. In a federation, the self-governing status of the component states, as well as the division of power between them and the central government, is constitutionally entrenched and may not be altered by a unilateral decision, neither by the component states nor the federal political body without constitutional amendment.
Sovereign power is formally divided between a central authority and a number of constituent regions so that each region retains some degree of control over its internal affairs.
Overriding powers of a central authority theoretically can include the constitutional authority to suspend a constituent state's government by invoking gross mismanagement or civil unrest, or to adopt national legislation that overrides or infringes on the constituent states' powers by invoking the central government's constitutional authority to ensure "peace and good government" or to implement obligations contracted under an international treaty.
The governmental or constitutional structure found in a federation is considered to be federalist, or to be an example of federalism. It can be considered in comparison with the unitary state. France and Japan, for example, have been unitary for many centuries.
The Austrian Empire was a unitary state with crown lands; after the transformation into the Austria-Hungary monarchy, the remaining crown lands of Cisleithania became federated as Länder of the Republic of Austria through the implementation of its constitution. Germany, with its 16 states, or Länder, and Nigeria, with its 36 states and federal capital territory, are examples of federations. Federations are often multi-ethnic and cover a large area of territory, but neither is necessarily the case. About 40% of the world population lives in a federation.
History
Several ancient chiefdoms and kingdoms, such as the 4th-century-BCE League of Corinth, Noricum in Central Europe, and the Iroquois Confederacy in pre-Columbian North America, could be described as federations or confederations. The Old Swiss Confederacy was an early example of formal non-unitary statehood.Several colonies and dominions in the New World consisted of autonomous provinces, transformed into federal states upon independence such as the United States, and various countries in Latin America. Some of the New World federations failed; the Federal Republic of Central America broke up into independent states less than 20 years after its founding. Others, such as Argentina, have shifted between federal, confederal, and unitary systems, before settling into federalism. Brazil became a federation only after the fall of the monarchy, and Venezuela became a federation after the Federal War.
Australia and Canada are also federations. They became federations while still part of the British Empire, and gradually evolved towards full independence.
Germany is another nation-state that has switched between confederal, federal and unitary rules, since the German Confederation was founded in 1815. The North German Confederation, the succeeding German Empire and the Weimar Republic were federations.
Founded in 1922, the Soviet Union was formally a federation of Soviet republics, autonomous republics and other federal subjects, though in practice highly centralized under the government of the Soviet Union. The Russian Federation has inherited a similar system.
India, Pakistan, Nigeria and Malaysia became federations on or shortly before becoming independent from the British Empire.
In some recent cases, federations have been instituted as a measure to handle ethnic conflict within a state, such as Bosnia and Herzegovina, and Iraq since 2005 as well as Somalia since 2012.
With the United States Constitution having become effective on 4 March 1789, the United States is the oldest surviving federation, while the newest federation is Nepal, after its constitution went into effect on 20 September 2015.
Federations and other forms of state
Federations
The component states are in some sense sovereign, insofar as certain powers are reserved to them that may not be exercised by the central government. However, a federation is more than a mere loose alliance of independent states. The component states of a federation usually possess no powers in relation to foreign policy and so enjoy no independent status under international law. However, German Länder have that power, which is beginning to be exercised on a European level.Some federations are called asymmetric because some states have more autonomy than others. An example of such a federation is Malaysia, in which Sarawak and Sabah agreed to form the federation on different terms and conditions from the states of Peninsular Malaysia.
A federation often emerges from an initial agreement between several separate states. The purpose can be the will to solve mutual problems and to provide for mutual defense or to create a nation-state for an ethnicity spread over several states. The former was the case with the United States and Switzerland. However, as the histories of countries and nations vary, the federalist system of a state can be quite different from these models. Australia, for instance, is unique in that it came into existence as a nation by the democratic vote of the citizens of each state, who voted "yes" in referendums to adopt the Australian Constitution. Brazil, on the other hand, has experienced both the federal and the unitary state during its history. Some present-day states of the Brazilian federation retain borders set during the Portuguese colonization, whereas the latest state, Tocantins, was created by the 1988 Constitution for chiefly administrative reasons.
Seven of the top eight largest countries by area are governed as federations.
Unitary states
A unitary state is sometimes one with only a single, centralized, national tier of government. However, unitary states often also include one or more self-governing regions. The difference between a federation and this kind of unitary state is that in a unitary state the autonomous status of self-governing regions exists by the sufferance of the central government, and may be unilaterally revoked. While it is common for a federation to be brought into being by agreement between a number of formally independent states, in a unitary state self-governing regions are often created through a process of devolution, where a formerly centralized state agrees to grant autonomy to a region that was previously entirely subordinate. Thus, federations are often established voluntarily from "below" whereas devolution grants self-government from "above".Confederation
A confederation, in modern political terms, is usually limited to a permanent union of sovereign states for common action in relation to other states. The closest entity in the world to a confederation at this time is the European Union. While the word confederation was officially used when the Canadian federal system was established in 1867, the term refers only to the process and not the resulting state since Canadian provinces are not sovereign and do not claim to be. In the case of Switzerland, while the country is still known officially as the Swiss Confederation, this is now a misnomer since the Swiss cantons lost their sovereign status in 1848.In Belgium, however, the opposite movement is underway. Belgium was founded as a centralized state, after the French model, but has gradually been reformed into a federal state by consecutive constitutional reforms since the 1970s. Moreover, although nominally called a federal state, the country's structure already has a number of confederational traits. At present, there is a growing movement to transform the existing federal state into a looser confederation with two or three constitutive states and/or two special regions.
A confederation is most likely to feature three differences when contrasted with a federation: No real direct powers: many confederal decisions are externalized by member-state legislation; Decisions on day-to-day-matters are not taken by simple majority but by special majorities or even by consensus or unanimity ; Changes of the constitution, usually a treaty, require unanimity.
Over time these terms acquired distinct connotations leading to the present difference in definition. An example of this is the United States under the Articles of Confederation. The Articles established a national government under what today would be defined as a federal system. However, Canadians, designed with a stronger central government than the US in the wake of the Civil War of the latter, use the term "Confederation" to refer to the formation or joining, not the structure, of Canada. Legal reforms, court rulings, and political compromises have decentralized Canada in practice since its formation in 1867.