While in most Western European countries (like France and the United Kingdom) the king's reign began immediately upon the death of his predecessor, in Hungary the coronation was absolutely indispensable as if it were not properly executed, the Kingdom stayed "orphaned". Even during the long personal union between Kingdom of Hungary and other Habsburg-ruled areas, the Habsburg monarchs had to be crowned as King of Hungary in order to promulgate laws there or exercise his royal prerogatives in the territory of Kingdom of Hungary. Since the Golden Bull of 1222, all Hungarian monarchs had to take a coronation oath during the coronation procedure, where the new monarchs had to agree to uphold the constitutional arrangement of the country, to preserve the liberties of his subjects and the territorial integrity of the realm.