And built a fine new civilization on top of the old, better than what they'd had before?

This is not the end of the new civilization, though.

I don't think we should start a new civilization thinking that way.

"You can say we have discovered a new ancient civilization."

Time passed, and a new civilization was built on Earth.

They made a new civilization, surrounded by rock, with no more thought of stars.

You have seen how they destroyed both the old and new civilizations of Iraq.

God knows it would be worthwhile to make friends with a new civilization!

Sometimes, the answer is that the new civilization can offer very little in the way of knowledge or goods.

There's been time for a new civilization to get started, but it's run away.