The Concert of Europe was an alliance established to serve what purpose? To address the issues of the revolution of 1884

To maintain stability and restore power to the monarchies

Explanation:

The concert of Europe was attended by a group of high ranking government that rules over western Europe.  This meeting was conducted after the French Revolution.

During the French revolution, the people executed the nobles in France and transform the country into a Democratic government.

After hearing these news, the nobles in other countries of Europe felt threatened. They're afraid that their people will be inspired by this revolution and do the same to them. This is why the concert of Europe was enacted. The nobles wanted to work together and find a way  To maintain stability and restore power to the monarchies .

from the conditions of the working class in england by friedrich engels,the main idea is :

i would say that the politicial parties from state to state varies.