"The Glorious Revolution"
Because William and Mary supported the supremacy of Parliament.
The Glorious Revolution was the name given to the bloodless overthrow of James II by William and Mary in 1688. James' Catholicism was a main driving force behind the revolution.
William of Orange, and his wife Mary. They became our only joint sovereigns, William III and Mary II.
Queen Mary II and King William III.
Glorious Revolution of 1688.
William and Mary ruled from 1688 CE to 1702 CE. Mary died in 1694 and William ruled alone until his death in 1702.
When King James II was deposed, William of Orange was crowned King William III and his wife became Queen Mary II. Mary was the daughter of James II.
The reign of William and Mary lasted 6 years,from Feb 13,1689 until Marys death on Dec 27,1694.King William remained King after Marys death for a further eight years until Mar 8,1702.
England has had two Mary's reign as monarch. Mary I was elder sister to Elizabeth I, and reigned in 16th century; Mary II was descended from Charles I, married to William of Orange, and they reigned jointly from 1688 until her death in 1694.
James II was dethroned in the nearly bloodless Glorious Revolution of 1688 by his daughter Mary and her husband, William of Orange.
If you are referring to England, the constitutional monarchy started with the reign of William III and Mary II (William & Mary). After Mary's father, James II, was run out of the country in the Glorious Revolution of 1688, she and her husband, William of Orange, were offered the crown as co-rulers if they agreed to having their powers limited via an English Constitution.