Related Clues:

• "Monty Python and the ___ Grail"
• Word with cats or cow
• "Star Wars" villains
• Kind of smoke?
• Sort of roller?
• ___ Hannah
• 'Monty Python and the ___ Grail'
• Number of countries ruled by one
• Domain ruled by an emperor or empress
• Group of countries under a single authority
• Group of countries under single authority
• Large group of states
• Group of countries ruled by single supreme authority
• Over which 23 down rules
• The Romans, Byzantines and Russians all ruled one