Where civilization grew dense, surviving animals learned to avoid people.

There was no reason such a civilization might not have grown up then.

Our civilization grows too brilliant to brush its own teeth.

A galactic civilization could grow from a single worm five times over in that time.

Terran civilization had spread across the stars, but grew stagnant.

A civilization is growing twelve hundred kilometers from where your tree has floated for fifteen Earth years.

It's been sitting right where it is for thousands of years as civilizations grew up and fell around it.

As your human civilization grew, we isolated ourselves even more.

As a civilization grows, its poor grow in number.

Maria, though, just believed that a civilization grew in stages.