Control and conquer people using force and coercion. Be able to keep that control.
The civilization of Mali started early in the 14th century. Initially, Mali was a province in the Ghana kingdom before it become an independent empire.
An empire if you are talking in terms of size.
I'd say an civilization
songhai empire
If a roman-Greco empire would invade another civilization the defeated civilization's people would become slaves. Usuall women and children
The British Empire has both positively and negatively effected the formation of Modern Civilization.
Rome was a city-state in Italy, which was so successful at expanding to become an empire, that it absorbed the Greek city-states.
the Aztec
Persian Empire.
civilization
The Maya civilization.
The Western half of the roman empire is a bla bla civilization The Eastern half of the roman empire is a bla ba dee bla civilization