What are your views about prehistoric men do you believe they were a group who died out long before?

Prehistoric simply means "before there was a history", and this dates only back around 5000 years or so. The Neanderthals were a separate sub-species of homo sapiens, and closely related to modern man - although of a separate branch that died out. We shared common ancestors, so the closest analogyy would be to say they were our evolutionary cousins. Modern humans have been around for around 200,000 years, and Neanderthals died out any where from 25-40,000 years ago (by some estimates.) This means humans and Neanderthals coexistedd, and probably interacted with each other, and competed for the same resources. It's also possible, should one or two things have gone differently, that they would be the survivors and we would have been the genetic dead end.