Answer:

reign

Answer	Crossword Clue
REIGN	Hold sway
REIGN	Royal rule
REIGN	Dynasty

REIGN	Rule
REIGN	Hold the scepter
REIGN	Have the throne
REIGN	Period of rule
REIGN	Dominate
REIGN	72 years, for Louis XIV
REIGN	Ruler's span
REIGN	Time in power

REIGN	... of Terror (French Revolution period)
REIGN	Period of power
REIGN	Period in power
REIGN	Wield the scepter
REIGN	Ruling period
REIGN	Sit on the throne
REIGN	Rule the kingdom
REIGN	Time on the throne

REIGN	King's tenure
REIGN	Victoria's lasted longer than that of any other British monarch
REIGN	Monarch's tenure
REIGN	Queen's tenure
REIGN	Run the country
REIGN	Occupy the throne
REIGN	Period on the throne
REIGN	Own the throne

REIGN	King's term
REIGN	Royal authority
REIGN	Monarch's rule
REIGN	Be in charge
REIGN	Despot's duration
REIGN	Sovereign time period
REIGN	Predominate
REIGN	Wield power

REIGN	Be the king
REIGN	Prevail
REIGN	Time at the top
REIGN	Tut's tenure
REIGN	Wear the crown