Nations are the ephemeral children of the French Revolution and Modernity.
Empires last for a 1.000 years.
The Holy Roman Empire (Latin: Sacrum Romanum Imperium) was a multi-ethnic complex of territories in central Europe that developed during the Early Middle Ages and continued until its dissolution in 1806. The largest territory of the empire after 962 was Eastern Francia (later also called “Regnum Teutonicum”), though it also came to include the Kingdom of Bohemia, the Kingdom of Burgundy, the Kingdom of Italy, and numerous other territories.
For this they need a real Patriarchy & Religion.
All of history shows this.
Hitler mangled this with his Bonapartism.
Never has such extreme Nationalism lasted long, nor will it ever.
Even Sparta didn´t last long, and it was defeated by gay warriors of Thebes.
Later both conquered and outlasted by far by Rome.
Learn from history: European Empires.