Confederation

A confederation (also known as a confederacy or league) is a political union of sovereign states or chiefdoms united for purposes of common action. Usually created by a treaty, confederations of states tend to be established for dealing with critical issues, such as defence, foreign relations, internal trade or currency, with the central government being required to provide support for all its members. Confederalism represents a main form of intergovernmentalism, defined as any form of interaction around states that takes place on the basis of sovereign independence or government. The nature of the relationship among the member states constituting a confederation varies considerably. Likewise, the relationship between the member states and the general government and their distribution of powers varies. Some looser confederations are similar to international organisations while other confederations with stricter rules may resemble federal systems. These elements of such confederations, the international organization and federalist perspective, has been combined as supranational unions. Since the member states of a confederation retain their sovereignty, they are generally understood to have the implicit right of secession, although in practice this right may be constrained by legal arrangements or increasing centralization that makes the confederation functionally similar to a federation. The political philosopher Emmerich de Vattel said: "Several sovereign and independent states may unite themselves together by a perpetual confederacy without each, in particular, ceasing to be a perfect state.... The deliberations in common will offer no violence to the sovereignty of each member". Under a confederation, compared to a federal state, the central authority is relatively weak. Decisions made by the general government in a unicameral legislature, a council of the member states, require subsequent implementation by the member states to take effect; they are not laws acting directly upon the individual but have more the character of interstate agreements....