Could you please name

To the atheists:

You often deny the existence of God on the grounds that it is not possible to prove empirically (i.e, scientifically) His existence. Fairly enough.

Now, show us your care for empiricallly demonstrable facts or theories, like atheism, trying to answer the following question:

Could you please name at least one human society or civilization either past or present which has no God?

I am not asking too much: just one.