Hegemony
In the 19th century, hegemony came to denote the "Social or cultural predominance or ascendancy; predominance by one group within a society or milieu". Later, it could be used to mean "a group or regime which exerts undue influence within a society". Also, it could be used for the geopolitical and the cultural predominance of one country over others, from which was derived "hegemonism", as in the idea that the Great Powers meant to establish European hegemony over Asia and Africa.
Hyperion (Simmons novel)
The Hegemony itself is a largely decadent society, relying on its military to incorporate into the WorldWeb the colony planets, even unwillingly, and to defend the Hegemony from attacks by the Ousters, "interstellar barbarians" who dwell free of and beyond the bounds of the Hegemony and shun all the works of the TechnoCore (especially farcasters). Ostensibly a direct democracy governed through the "All Thing" forum, the Hegemony is also managed by a chief executive officer advised by the TechnoCore advisory council and the Hegemony Senate.