Charles II was restored as King of England in 1660 after the English Civil War and Interregnum. However, religious conflicts and fears of a Catholic monarch grew under his brother James II. This led to the "Glorious Revolution" of 1688, where Parliament invited William and Mary to become monarchs under new constitutional limits, establishing England as a constitutional monarchy. The revolution settled succession and prevented a Catholic line of kings, while shifting power from the monarch to Parliament through acts like the English Bill of Rights.