Related Clues:

• Consummate skill
• Powerful ruling period
• Prowess
• Part of HRE
• Darth Vader's dominion
• Big realm
• Wide domain
• See 90-Down
• Vast realm
• Caesar's domain
• It's defeated in 'Return of the Jedi'
• Napoleon's realm, e.g.
• Variety of apple
• Vast enterprise, as in publishing
• Mastery