As soon as history began being recorded. Prehistoric simply means that nothing was being recorded. For instance, the prehistoric era ended in parts of ancient Mesopotamia about 3000 BCE, while an undiscovered tribe that exists right now (and there are some, particularly in the Amazon) would still be considered prehistoric.
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Carbon is known from prehistoric times.
the word war did not exist in that time period the prehistoric era was a time when the was no written documents
Lead is known from prehistoric times.
Giant stones (e.g. the Stonehenge stones) from prehistoric times.
"Prehistoric" times of a people end from the moment that written documention either by or about a people starts to surface.
in prehistoric times, ichthyosaurs lived in Nevada.
Yes, in prehistoric times they wrestled nude.
The early man in prehistoric times they were called prehistoric.
It was a remarkable project, and the book instantly became a valuable contribution to paleontology. The scientific study of fossils is known as paleontology.
in the prehistoric times
in prehistoric times.
prehistoric times
Polio, short for poliomyelitis, has been known since prehistoric times. The name "poliomyelitis" was applied to it at the end of the 19th century.
In prehistoric times.
Prehistoric times! Forests...
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