To some degree every country engages in propagandising history lessons for elementary school children. (e.g. Japan depicting itself as morally right in WWII in

To some degree every country engages in propagandising history lessons for elementary school children. (e.g. Japan depicting itself as morally right in WWII in its curricula), but the USA takes it to the next level: Post civil war, the US government undertook the construction of a kind of pseudo religion, in an effort to unite the very divided post civil war country. So we have various legends about the founding fathers, the story of thanksgiving, the "pledge of allegiance" based loosely on the lord's prayer, and so on. The whole thing of course, relies on an inherent ambiguity in these legends and ideals, which allows a hugely diverse country to project their own values onto them, and interpret them in a way that feels right- like the entire country believes in the same thing, when really we all believe very different things and are able to see those different beliefs in the same set of stories. It's all kind of fractured apart since the invention of the internet. That illusion of common beliefs is hard to maintain when we can actually all talk to each other.