They are pre-historic because there was no written record.
romantic
Johann Pachelbel was a Baroque composer.
"Making Whoopee" is a "jazz era" popular song but isn't a tune played usually by jazz musicians it does not belong to any jazz style.
sup
written launguage
Prehistoric means before events where logged and recorded by man; all dinosaurs exisited in the prehistoric eras.
Another name for the Prehistoric Era is the Stone Age.
Prehistoric Era
After the prehistoric era, came the recorded historic era comprising of the ancient , middle, and modern age.
cassica age
The Paleo-Indian Era, The Archaic Era, The Woodland Era, The Mississippian Era
Dinosaurs lived during the Mesozoic era.
The prehistoric era was before humans.
That is called a society's 'prehistoric' era.
the word war did not exist in that time period the prehistoric era was a time when the was no written documents
A good sentence using the word "prehistoric" could be, "Prehistoric animals roamed the Earth unhindered by modern day pollution." Prehistoric means dating back to an era before history was recorded.