Final answer:
The mixed constitution in England in 1689 led to the Glorious Revolution and the establishment of a constitutional monarchy, protecting the rights of English subjects and limiting the power of the king.
Step-by-step explanation:
The significance of the mixed constitution in England in 1689 is that it led to the Glorious Revolution and the establishment of a constitutional monarchy.
The Glorious Revolution, which occurred in 1688, resulted in William and Mary taking the throne and the passing of the 1689 Bill of Rights. This bill established the independence of Parliament from the monarchy, protected the rights of English subjects, and limited the power of the king.
By establishing a constitutional monarchy, the mixed constitution in England helped secure certain rights and protections for the people, such as trial by jury and the right to petition the king.