What is meant by US hegemony in world politics?

Hegemony as a term refers to an international system which tends to be dominated by a single superpower or hyper-power only. This word means the predominance or leadership of a state over others via virtue of its economic, cultural superiority, military and political power. Soviet Union’s collapse led to the domination of the world by a sole superpower, the United States of America, which led the entire world by its military, economic, cultural superiority as well as political power.