The Treaty of Vienna of 25 March 1815 was the formal agreement of the allied powers — Austria, Great Britain, Prussia and Russia — committing them to wage war against Napoleon until he was defeated.
<h3><em><u>The Treaty of Vienna of 1815 was the formal agreement of the allied powers – Austria, Great Britain, Prussia and Russia to draw up a settlement for Europe. The main goal of this treaty was to undo all the changes that were brought about in Europe during the reign of Napoleon wars.</u></em></h3>
