Thank you for your fine writing.

Of course history is a body of facts and therefore fixed but there are so many facts and also disputes that any particular written history is selective and gives different emotional emphasis to those events.

If one goes to another country with which yours has interacted you will usually find completely different versions of the same events.

For example if your country has done bad things there the events in your history will be downplayed, maybe just a footnote, whereas in theirs it will be a whole chapter with giant heroes.

Its possible that humans need this heroic mythology in order to thrive.

How to write the history of the USA?

The standard history (founding fathers) emphasises the intellectual contribution these people made to constructing a free and democratic state, but many of them also had slaves.

The 1619 project emphases the heroic struggle of black people to gain emancipation.

Normally a nation has one dominant mythology, can it accommodate two clashing mythologies?