Why did Camillo Benso, count di Cavour fear that Garibaldi’s victories could lead to a republican revolution?

Camillo Benso, count di Cavour, feared that Giuseppe Garibaldi’s military successes could trigger a republican revolution because the movement was increasingly driven by radical democratic elements rather than the moderate, monarchist framework Cavour sought to maintain.12

Cavour was concerned that the Risorgimento was being transformed into a popular, revolutionary movement by Garibaldi’s followers, which threatened to undermine the leadership of the Piedmontese monarchy. Furthermore, Cavour worried that if Garibaldi continued his march toward the Vatican, it would provoke an intervention by Napoleon III, who was committed to protecting the remaining papal territories.231

To prevent a potential republican coup and ensure that the unification of Italy remained under the control of the Piedmontese crown, Cavour took the initiative to occupy the Papal States of Umbria and the Marches. By positioning himself as a defender of law and order against revolutionary excesses, Cavour successfully pressured Garibaldi to yield his conquests and accept the annexation of the south into a unified kingdom under Victor Emmanuel II.312