That all changed when she was kidnapped by people from the underground civilization known as Abyssia.

Dust is a substance that was leftover from an extremely powerful, ancient, extinct civilization only known as the Endless.

This was discovered from the remnants of a civilization only known as the Pre-Entities.

One of them, an early civilization known as the Ba people, is at risk.

She is from the Mu race, a civilization known for its advanced machinery.

Many years ago, an ancient civilization known for their advanced technology once ruled Earth, but were destroyed in the end by their misuse.

Almost every civilization known develops a system of preserving food in metal cans.

They were by far the earliest civilization known by humans.

This caused full scale war to erupt between the two civilizations, now known as the Aeth'er Wars.

The Babylonians were the first civilization known to possess a functional theory of the planets.