Question

what was main aim of treaty of Vienna of 1815

Answer 1

 Objectives of the Treaty of Vienna : 
(a) Undoing most of the changes that had come about in Europe during Napoleonic wars. 
(b) Bourbon dynasty's rule was restored. 
(c) France lost the annexed territories. 
(d) Series of states were set up on the boundaries of France to prevent French expansion. 
(e) Prussia was given important new territories on its frontiers

Answer 2

1. To undo what was done by Napoleon
2. Install previous regimes
3. Share the territories
4. Make arrangements in Borders of France so that France is not able to extend its territory.