he·gem·o·ny 
(hĭ-jĕmə-nē, hĕjə-mō′nē)
(hĭ-jĕmə-nē, hĕjə-mō′nē)n. pl. he·gem·o·nies
The predominance of one state or social group over others.
[Greek hēgemoniā, from hēgemōn, leader; see HEGEMON.]
heg′e·monic (hĕj′ə-mŏnĭk) adj.
he·gemo·nism n.
he·gemo·nist adj. & n.