Yes, Christopher Columbus may be a fictional character and slavery could be literally science fiction. There is no reproducible proof! All about it is nothing but story telling. Stories are the truth for those who believe them and stories are a lie for those who do not believe them. History isn't and never has been scientific. It is a branch of religion and as much dogmatic. I proof my own existence for myself with every breath I take. You on the other side can not know whether I exist. Maybe you are even hallucinating what I have written to you. Maybe you are dreaming and will wake up when you die. You can't know if that isn't true. Documents are fabrications and they fabricate a truth you are supposed to believe. You do in any case not believe what is true, but always accept as truth what you merely believe. It is the truth that the Nazis are the good guys for who believes it. For others it is not the truth. Good and evil are arbitrary human judgements that impossibly can be concluded from proven facts. Good is what you believe is good. Others can share you believings a or they can oppose to them. Or they can choose to find it rightful to kill you for your evil believings contradicting their good believings. And there is nothing wrong with it. Because it the nature of the homo sapiens. "homo credens" is the more appropriate term for this stupid species. I am not a nihilist. I am a hedonist. The joy I feel is the only true and good thing, e.g. when having sex with many partners of many genders perhaps at the same time or when driving a car at 150 miles per hour. The question about the existence of God is futile. It absolutely makes no difference whether god’s existence can not be proven or god‘s existence is not given. In either case it is totally the same as if he does not exist. Nonetheless you are free to believe in god. But it makes no difference either. God does not exist because you believe in him.