5. The congress of Vienna was started in the aftermath of Napoleon`s defeat. Six Nations all met in Vienna to discuss a balance of power among these rival nations so none of these nations could threaten the other. The Congress of Vienna also wanted to make sure that there would be no more oppression in France. | 5. The congress of Vienna was started in the aftermath of Napoleon`s defeat. Six Nations all met in Vienna to discuss a balance of power among these rival nations so none of these nations could threaten the other. The Congress of Vienna also wanted to make sure that there would be no more oppression in France. |