What is the achievement of Vienna congress?

The Congress of Vienna, held from 1814 to 1815, aimed to restore stability and order in Europe after the Napoleonic Wars. Its key achievements included the redrawing of national boundaries, the establishment of a balance of power to prevent future conflicts, and the restoration of monarchies in several countries. The congress also laid the groundwork for a diplomatic framework that would influence international relations for decades, promoting cooperation among European powers. Overall, it aimed to create a lasting peace in Europe, which it largely achieved until the outbreak of World War I.