Hegemony

Leadership or dominance, especially by one country or social group over others. Also: hegemonic (adj).

From Ancient Greek ἡγεμονία (hēgemonía, “supremacy or leadership, chief command”), from ἡγεμών (hēgemṓn, “a leader, guide, commander, chief”), from ἡγέομαι (hēgéomai, “to lead”). Early 19th-century usage influenced by German Hegemonie.