The Congress of Vienna was held in 1815.It was chaired by Austrian statesman Klemens von Metternich .It was held to draw up a new settlement for Europe amongst the European powers after the defeat of Napoleon. It main objective was to redraw the map of Europe and to undo the changes that had come about in Europe during the period of Napoleon. European powers were driven by the ideology of Conservatives whose main aim was to establish monarchial regimes in Europe.
Three changes introduced by the Treaty of Vienna (1815) in Europe were
1. A German Confedration of 38 states was created from the previous 360 of the Holy Roman Empire, under the presidency of the Austrian Emperor.
2. Russia was given most of the Duchy of Warsaw (Poland) .
3. The Netherlands and Southern Netherlands (Belgium) were united in a monarchy called the United Kingdom of the Netherlands.