[marktwain]

Sparta lasted four centuries, as I recall...

You could argue Sparta was a part of Greek civilization, not an entire civilization, I suppose.

But yes, Judeo-Christian ethos resulted in more babies and more babies surviving. Over time, Christianity took over the Roman Empire.

[fini]

"Sparta lasted four centuries, as I recall..."

Sparta's rules were very different than modern morality, but their rules were strictly enforced and their punishments were very swift and harsh.