When Napoleon was exiled. The Allies invaded France and captured Paris in the spring of 1814, forcing Napoleon to abdicate in April. He was exiled to the island of Elba off the coast of Tuscany, and the Bourbon dynasty was restored to power creating discomfort in the french people, asking for a return of Napoleon.
Napoleon escaped from Elba in February 1815 and took control of France once again.
Napoleon returned while the Congress of Vienna was sitting. On 13 March, seven days before Napoleon reached Paris, the powers at the Congress of Vienna declared him an outlaw, and on 25 March Austria, Prussia, Russia and the United Kingdom, members of the Seventh Coalition, bound themselves to put 150,000 men each into the field to end his rule. This set the stage for the last conflict in the Napoleonic Wars, the defeat of Napoleon at the Battle of Waterloo, the restoration of the French monarchy for the second time and the permanent exile of Napoleon to the distant island of Saint Helena, where he died in May 1821.
