A pact was made between French emperor Npoleon III and Cavour at a place called Plombiers near Sardinia, on 21 July, 1858.
The main features of the pact were the following :
- In the event of a war between Sardinia and Austria, France would give military assistance to Sardinia. ‘
- In return of military help, Sardinia would cede the territories of Nice and Savoy to France.
- Lombardy and Venetia would be given to Sardinia, after the defeat of Austria.
- Naples, Sicily and the Papal states would remain as such.
- Calathide, the daughter of Victor Emmanuel, would be married to Jerome Napoleon, the paternal cousin of Napoleon III.
- Palarma, Modena and Tuscany would combine to form a new state on which Napoleon Ill’s cousin Jerome Napoleon would rule.