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It encompasses the vast span of time during which humans and their ancestors lived without leaving written accounts of their activities and events. · prehistory refers to the period of time before the advent of written records or documented history. How to use prehistoric in a sentence. The prehistoric age covers the millions of years that took place before human beings began to create written records of their life and of the world in which they lived. Discover geologic facts including the permian and devonian periods. · for roughly 2. 5 million years, humans lived on earth without leaving a written record of their lives—but they left behind other kinds of remains and artifacts. The meaning of prehistoric is of, relating to, or existing in times antedating written history. It is divided into several key periods, each marked by significant developments in technology, culture, and society. · discover the prehistoric periods prior, during and after the dinosaurs. Prehistory, also called pre-literary history, [1] is the period of human history between the first known use of stone tools by hominins c. · the prehistoric era encompasses a vast span of human history before the advent of written records.