The Congress of Vienna was convened in 1815 by the four European powers which had defeated Napoleon.
They had 2 goals:
-The first goal was to establish a new balance of power in Europe which would prevent imperialism within Europe, such as the Napoleonic empire, and maintain the peace between the great powers.
-The second goal was to prevent political revolutions, such as the French Revolution, and maintain the status quo.
There they met Austria, Prussia, Russia, Great Britain and later France