Succession of states

Succession of states is a concept in international relations regarding a successor state that has become a sovereign state over a territory (and populace) that was previously under the sovereignty of another state. The theory has its roots in 19th-century diplomacy. A successor state often acquires a new international legal personality, which is distinct from a continuing state, also known as a continuator or historical heir, which despite change to its borders retains the same legal personality and possess all its existing rights and obligations (such as a rump state).