Pope John XII crowns German King Otto I as Holy Roman Emperor. He's the first Holy Roman Emperor in almost 40 years. Pope John XII was just 18 years old when he was elected pope on the orders of Duke Alberic II of Spoleto, ruler of Rome and his father.
As much of a scandal as that was, it was made even worse by the fact that he was such a womanizer that the papal palace came to be described as a brothel. Upon crowning the German king Otto I, he restores the Holy Roman Empire and that allows Otto and his successors to exert secular influence over future papal elections.