Hegemonic stability theory is a concept in international relations that proposes that the prevalence of a single dominant power in the international system can promote stability and order. However, there are several different terms that can be used to describe this theory, including the "hegemonic stability hypothesis," the "hegemonic stability explanation," and the "dominant power theory." Additionally, some scholars have referred to this theory as the "Pax Americana" concept, due to the role played by the United States as the dominant power in the post-World War II era. Regardless of the specific terminology used, the hegemonic stability theory remains an important and widely studied concept in the field of international relations.