Over the past 40 years we’ve adjusted not the history but how we VIEWED history. You see, the story is about ALL the human race, not just the White Male Christians. So, historians started asking “Hey what did the women think about this?” and then started writing books about, maybe teaching it in their classes. Conservative see this as rewriting history, the rest of us see it increasing history
Let me put it another way. No one denies that Christopher Columbus sailed the Nina, Pinta and Santa Maria from Spain looking for a passage to India. He discovered a land the Europeans knew nothing about. What he did fundamentally changed Europe, indeed the world. No one is taking away from his actions when they also point out that he was motivated by greed, a ravening zealot and murdering slaver. We say this because when we look at the totality of his actions, and the source materials we find the evidence supports the conclusions. Oh, that and all the dead Native Americans.