The Congress of Vienna in 1815 resulted in the significant agreement to restore stability and order in Europe after the Napoleonic Wars. The major outcome was the establishment of a balance of power among the major European nations, which sought to prevent any single country from dominating Europe again. This was achieved through a series of alliances and territorial adjustments. The congress also endorsed the principle of legitimacy, restoring monarchies that had been displaced during the Napoleonic era. The agreement laid the groundwork for international diplomacy and served to maintain relative peace in Europe for several decades.