King of the Ring was produced as a pay-per-view event.
In classical European feudalism, the title of king as the ruler of a kingdom is understood to be the highest rank in the feudal order, potentially subject, at least nominally, only to an emperor (harking back to the client kings of the Roman Republic and Roman Empire)
In eastern Europe, the Grand Duchy of Moscow did not technically claim the status of kingdom until the early modern Tsardom of Russia

