Why in European history during the 1800-1870s. were protest movements and revolutions a common phenomenon?

Why in European history during the 1800-1870s. were protest movements and revolutions a common phenomenon? Why England is different from the European continent. did not the protest movements cease in the revolution?

Protest and revolutionary movements were promoted by the Enlightenment preceding this time and, to a greater extent, by the Great French Revolution that broke out at the end of the 18th century. She gave both an example and a cultural and intellectual influence on the revolutions of the following years. This process gave impetus to the so-called awakening of nations in empires. England, in contrast to the continental European powers, often came out of the water in such cases. Here, the king listened to such events and tried to carry out reforms from above or act proactively, which often saved the situation.