If you think about it "Civilization" hasn't been around for to long. If we humans are millions of years old then why is civilization so young? and Real history so new in comparison.
Since when was civilization considered to be "young"? Civilization, perhaps how YOU know it and the one YOU live in can be considered young. That is what you might consider civilization to be, but it in itself has existed far longer than you acknowledge. Just because life once revolved around trading tools for anise or poppy does not mean it was not civilization of its own time.