what does Aulic Council and Hofburg have in common?
Hofburg The Hofburg is the former imperial palace in the centre of Vienna, Austria. Built in the 13th century and expanded in the centuries since, the palace has been the seat of power of the Habsburg dynasty rulers, and today the official residence and workplace of the President of Austria. It was the principal imperial winter residence, as Schönbrunn Palace was the summer residence.
Golden bull A golden bull or chrysobull was a decree issued by Byzantine Emperors and later by monarchs in Europe during the Middle Ages and Renaissance, most notably by the Holy Roman Emperors. The term was originally coined for the golden seal (a "bulla aurea"), attached to the decree, but came to be applied to the entire decree. Such decrees were known as golden bulls in western Europe and "chrysobullos logos", or chrysobulls, in the Byzantine Empire (χρυσός, "chrysos", being Greek for gold).