The Treaty of Vienna (1815) was signed after the defeat of:

1. After Napoleon's defeat at Waterloo (1815), European powers gathered at Vienna. 2. The treaty restored the Bourbon dynasty in France and re-drew the European map to maintain a balance of power. 3. It also CHECKED revolutionary ideals — sparking the conservative reaction across Europe. _Source: NCERT Class 10 SST History Ch 1 §1.3 The Vienna Congress of 1815_