Hegemony

noun/hih-jem-uh-nee/

Meaning

leadership or dominance, especially by one country or social group over others.

In context
The country extended its hegemony over its neighbours.

Remember it

From Greek hegemon, leader — hegemony is one leader-group towering over all the rest.

Use it well

A formal essay word for dominance by one group or country: 'cultural hegemony', 'regional hegemony'.