The Neanderthal lived throughout a widely divergent climate and habitat. These peoples adapted quickly to new environments as they migrated. Some lived in caves, while others built shelters out of branches and animal skins. Still others dug pits and covered them with branches, animal skins and leaves.
Keep high aspirations, moderate expectations and small needs.
At the height of its power, in 400 BC, the Greek city of Sparta had 25,000 citizens and 500,000 slaves.