How can the Roman empires expansion be described

They expanded through fighting wars and earnings cities, thereby becoming an empire

Explanation:

To achieve this immense expansion Rome became what one historian has called a warrior state.

The Romans built up their empire through conquest or annexation between the 3rd century BC and the 3rd century AD.

The many diverse peoples and cultures whose countries became part of the Roman Empire were, to varying degrees, united by Roman culture and Roman ideals of government and citizenship.

Two thousand years ago, the world was ruled by Rome, but Rome could not rule itself. It took two men to wrestle Rome back from chaos and turn a republic into an empire. In the first century BC, Rome was a republic. Power lay in the hands of the Senate, elected by Roman citizens.

Greek architecture was one important influence on the Romans. The Greeks built marble temples as homes for their gods. Their temples had elaborate columns that added to their beauty.