Which term describes a state's ultimate authority over its territory?

The term that describes a state's ultimate authority over its territory is sovereignty. Sovereignty refers to the principle that a state has the full right and power to govern itself without interference from outside sources. This includes the ability to create and enforce laws, manage resources, conduct foreign relations, and exercise control over its territory and population.

Sovereignty is foundational in international relations as it establishes the legal and political framework within which states operate. It signifies the independence of a state in the international system and recognizes its right to exist as a distinct entity, free from external control. This concept also plays a crucial role in issues of territorial integrity and self-determination.

Other terms do not convey the same meaning. Autarky refers to a state’s economic independence and self-sufficiency, which does not encapsulate authority over territory. National interest pertains to the goals and objectives a country seeks to achieve in order to enhance its security and well-being, but it does not denote authority over territory. Hegemony refers to the dominance of one state or group over others, particularly in political and economic terms, rather than the idea of ultimate authority that sovereignty represents.