Complex sentence: Bosnia, Zahumlje and Rascia were never incorporated into an integrated state with Duklja; each principality had its own nobility and institutions, simply requiring a member of the royal family to rule as Prince or Duke.
Split into simpler sentences: Bosnia, Zahumlje and Rascia never were incorporated into an integrated state with Duklja. Each principality had its own nobility and institutions, simply requiring a member of the royal family to rule as Prince or Duke.