Respuesta :
until they die. A monarch rules until they die, get deposed, or step down
There is no set duration. Queen Elizabeth II is now the longest serving British Monarch. She has reigned from 6 February 1952 - to the present = 63 years as of 2015.
Lady Jane Grey, born 1536/1537, was known as the nine-day queen!
Lady Jane Grey, born 1536/1537, was known as the nine-day queen!