The ancient and sophisticated empire that discovered Earth's colonies had been through this many times before.

What do you know of ancient empire and craft and war?

Once an ancient empire, Ikaemos was destroyed by their god's anger.

Relay rider networks were a common feature of every ancient empire.

References to hair fetish can be found in ancient empires.

No one else has approached his level of contribution to knowledge of this important ancient African empire.

But the economic system of the ancient empires had been assumed to be incompatible with developing advanced technology.

Libya is a crossroads of history, continents and ancient empires.

It also was used by large ancient empires such as Rome before the advent of the canteen.

Zork is set in "the ruins of an ancient empire lying far underground".