10 Mysteries of Forgotten Advanced Civilizations

de bene esse: literally, of well-being, morally acceptable but subject to future validation or exception

Prehistory literally means the time “before we had written records” (roughly the time before the 4th Century BC) and ancient history is the time since our recorded history. link

1. Prehistory is the period that begins with the appearance of the human being, about five million years ago, and finishes with the invention of writing, about 6,000 years ago. It is a long period divided into three stages: the Palaeolithic Age, the NeolithicAge and the Metal Age.
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