Sovereignty

Sovereignty is the principle of supreme authority within a defined territory, encompassing legitimate authority to command and be obeyed, supremacy over all competing internal authorities, and territoriality as the basis for political community membership. It is a foundational concept in political theory and international law, historically developed by thinkers including Jean Bodin, who gave it its first systematic treatment, and Thomas Hobbes, who conceived it as absolute authority transferred from the people to a sovereign through a social contract, with later theorists including John Locke and Jean-Jacques Rousseau developing the related idea of popular sovereignty, in which ultimate authority rests with the people rather than a ruler. The Peace of Westphalia (1648) is sometimes cited by scholars as the conventional origin point of the modern sovereign-state system, though this framing is itself actively contested among historians, some of whom argue that elements of state sovereignty predate 1648 and that hierarchical, non-sovereign structures persisted well after it. In the modern international system, states are conventionally treated as the primary holders of sovereignty, though since the mid-twentieth century this has been increasingly qualified by human rights law, the Responsibility to Protect doctrine, and supranational bodies, and it remains subject to ongoing debate over the tension between a state's right to non-interference and the international community's asserted authority to intervene on humanitarian grounds. The atlas records no single honest founding year for sovereignty as a concept, since it developed gradually through political philosophy over centuries.