Writing historical fiction is pretty much the same as writing any kind of fiction: you need a gripping story, relatable characters, and an authentic setting. But only in historical fiction (and perhaps Star Wars FanFiction) can the world you build be fact-checked. That means your dates must be right. Your politics must be right. Your lay of the land must be right. You absolutely cannot skimp on immoveable facts.
But how will you ever know all these facts? How will