 Complete the following phrase:  A succession of serious regional anti-Austrian pro-nationalist insurrections now broke out in Florence, Modena, Parma and the Papal States. Napoleon III evidently concluded that his earlier plan to secure French domination of central and southern Italy through his alliance with Piedmont-Sardinia could only be achieved at an unacceptable military and economic cost. On a personal level he seems to have been genuinely and very publicly horrified by the slaughter involved in fighting wars in an industrial age, notably at the battles of Magenta and 