The great powers affirmed he principle of Legitimacy - agreeing that as many as possible of the rules whom Napoleon had driven from their thrones be restored to power. The ruling families of France, Spain, and several states in Italy and central Europe regained their thrones. The participants in the congress of Vienna believed that the return of the former monarchs would stabilize political relations among the nations.
The Congress of Vienna was a political triumph in many ways. For the first time, the nations of an entire continent have cooperated to control political affairs. The settlements they agreed upon were fair enough that no country was left bearing a grudge. By agreeing to come to one another's aid in case of threat of peace, the European nations had temporarily ensured that there would be a balance of power on the continent. The congress of Vienna, then, created a time of peace in Europe.