History is probably one of the most difficult subjects for selecting which bits to study. And there tends to be a lot of bias about “home” history, e.g. the negative effects of British colonialism, which kind of get swept under the carpet.
AdoraBell mentions upthread about a teacher from San Francisco not knowing about earthquakes there. Presuming it was the 1906 earthquake, a lot of the history of that event got “buried” by renaming it the Great Fire of 1906. The reason for that was commercial – the city needed investors to help rebuild the city, but very few were likely to invest in an earthquake-prone area, whereas a fire could be marketed as preventable.
I’m not sure that fictionalising history helps, except perhaps as a jumping off point. There’s always the danger of the story becoming more important than the reality. I’ve not watched Braveheart but I gather it was heavily criticised for historical inaccuracies.
I know there are now programmes in some US liberal arts universities, where all first-year undergraduates study a specific range of subjects, to replace the Western Civilisation course with a World History course. That’s partly to get away from the idea that civilisation has marched relentlessly westward: from Greece to Rome to Western Europe to the USA. And partly to recognise, with increasing numbers of students who have a family history from other than Western Europe, that history also happens in other parts of the world.
There are good resources on the internet, but they’re not always easy to find. And I think one of the things that might hold people back from seeking out more knowledge is the idea that learning involves tests and exams, because that is the experience of being at school. It takes a bit of a mental shift to see learning as just fun. There are loads of documentaries on TV (well, on Sky), but after a day at work, then cooking, then doing bedtime, then sorting out uniform and tomorrow’s lunch bags, etc, etc, who wants to then sit down and do some “learning”? But if it’s a Lucy Worsley programme, yes there is always something to “learn”, but it’s primarily a cracking good story.