> I can well believe, however, that any current with a current one-party dictatorial government, something Taiwan had the first time I lived there and something China still has today, will lag in teaching history.
Multiparty liberal democracies allow much more scope for debating and interpreting history, but they still commonly encourage a teleological interpretation that glorifies the nation and its current political system.
I also get the feeling that understanding history in a meaningful way is hard, and that educational systems generally aren't making much headway against this problem, maybe somewhat independently of how much debate or criticism they permit. One difficulty is the conscious and semiconscious propagandization of many historical issues by many parties, together with the desire to see historical figures or groups we identify with in a positive light and those we don't identify with in a negative light. Another thing is the truth of the "past is a foreign country" observation:
https://en.wikiquote.org/wiki/L._P._Hartley
Getting inside of the minds and cultures of people from the past is really difficult!