Prehistoric describes the time before people invented writing.

This vast period covers millions of years, from early humans and their ancestors until different civilizations began keeping written records. Because prehistoric people left no written documents, everything we know about them comes from what they left behind: tools, bones, cave paintings, and ancient settlements. Archaeologists dig up these clues and piece together how prehistoric people lived, hunted, and survived.

The prehistoric era ended at different times in different places. Writing appeared in ancient Mesopotamia and Egypt around 5,000 years ago, but some societies remained prehistoric much longer because they hadn't developed writing systems.

When you hear about prehistoric animals like woolly mammoths or saber-toothed cats, that means they lived during this ancient time before written records. A prehistoric cave painting shows art created before writing existed. The word doesn't mean primitive or simple; prehistoric people were clever, creative survivors who invented agriculture, built communities, and created beautiful art, all without the benefit of written knowledge passed down through writing.