It's the uniform culture of Eastern Orthodox countries. The state pushes a "one and only" historical narrative in the nation-wide educational system. That narra

It's the uniform culture of Eastern Orthodox countries. The state pushes a "one and only" historical narrative in the nation-wide educational system. That narrative is internalised by most of the population as hard objective truths, rather than seen as just a subjective view. The notion that a sub-community may evolve and try to self-identify and govern itself is inconceivable when "history" tells us that they were us, so there must be some decadent external influences affecting them.