Related Clues:

• Exercise of sovereign power
• Time at the top
• Period of rule
• Tut's tenure
• Predominate
• Despot's duration
• Cover many subjects?
• Time on the throne
• King's tenure
• Time in power
• Be lordly
• Victoria's lasted longer than that of any other British monarch
• Take to the throne
• Wield power
• Rule over in Niger