The news of Jerome Bonaparte at the Paris City Hall on December 12, 1851, sent shockwaves throughout Europe (primarily among the public). Many elderly people (mainly nobles) who had participated in the Napoleonic Wars recalled the fear of the time of the Napoleonic Empire. They called on Europe to unite once more to attack the French Empire that had risen from the grave.
Meanwhile, some revolutionaries living abroad (Mazzini, Kossuth) rejoiced at the proposal of the French Empire. In their view, the proposal signified the onset of a European war, and the countries they were in would inevitably be involved in the war, thereby winning the independence they deserved for their own countries.
Therefore, when France announced the establishment of the Empire, revolutionaries from Hungary, Italy, and Poland flocked to Paris, using their channels to convey their "blessings" to Napoleon III and their hope that the French Empire could assist them in establishing their own nations.
