>>17811880Many European groups took generations to integrate. Many German communities only integrated due to pressure during the world wars. Until then they spoke German and were culturally German, and resisted the efforts of Anglo-Americans to make them integrate.
> Han Chinese homogeneity That is not a thing. The Chinese empire continuously expanded and integrated new ethnic groups, s0ome of whom were classified as Han, but this was more a mark of how much they had integrated. What held China together was how efficiently it spread its culture and writing system through conquest and diplomacy. Many foreign nations willingly adopted large parts of the culture and even accepted vassalage for the many benefits it afforded.