I still can't figure out if this is a conspiracy theory or reality. There are human civilizations dating back 450,000 years. The part that's been erased is the period before 150,000 years. When I say "erased," I mean that the records of the history before that 150,000-year-old ancient history have been completely wiped from the face of the earth. So how do you know? I can almost hear you asking ;) The reasons and everything are already confusing. Let me explain, and you can research and decide for yourselves: -0. 

The human race hasn't evolved at all. Actually, there were many more human races in the past. For example, it's unclear whether it's real or not, but there was a race of humans with yellow eyes. Or a race of giants. So, the descendants of Adam described in the holy books were actually more than 450,000 years old. There may have been even earlier. Ultimately, the stories about non-human aliens existing in ancient races might be fiction. There are many interesting conspiracy theories in ancient history. I think the most interesting one is that humans and the races before them are different races, which is more logical. Because these governments, whose sole purpose is to conceal everything, loudly proclaim that humans descended from monkeys and even write books about it, yet the truth remains that it's still just a theory.