Chapotraphouse

Each European country knows more about the most recent 300-500 years of their own country compared to the longer history, which is essentially just connected to the history of the church. You missed Vikings though too they love that shit.

Example, here in the UK we know a fuckload about monarchs because that shit is forced down our throats. Particularly the Victorian era as it's tied to support and pride for the British empire, while the rest is tied to england coming into existence as a united entity and foundational to what it means to be "English". Without that knowledge there basically is no English identity and the English could go back to being 20 different groups. The midlands, the South, Cornish, Northumberland etc etc, these are all unique identities without the indoctrination that schools provide to forge the idea of "England", they are still unique identities to this day and I could very much see a scenario where they split off again in the face of a rejection of English-ness under the right sequence of events and conditions.

Some of the same shit I imagine also plays out in each European country. I can't say for sure as I've not really dived into how they teach their history and maintain that identity, I assume similar reasons for what they teach but different history of course.

Each individual European country knows a good chunk of its history along with how that history connects to the christian church. This ties together euro cultural identities.