
Not really tbh. Historical context is very important here. Colonial America had about 1/3 patriots, 1/3 loyalists, and 1/3 neutral during the Revolution. Really not much has changed, even down to regional demographics. Large nations also tend to gain their size from the subjugation of its neighbors, which breeds discontent for decades to centuries. Even past Rome, other great empires stood for extended lengths of time like the Byzantines and Ottomans
They don’t last for thousands of years like all “great societies” dream of doing. In my opinion the human race hasn’t evolved to the point of mass national identities. I guess what I mean by historically significant period of time is an empire/dynasty/whatever lasting through major periods of human advanced (industrial revolution, space age, etc)