The Prince synthesized foreign statecraft Italy lacked the forces to enact

Evidence

This function can be seen in Machiavelli too, though Machiavelli attempted to turn it to national ends (without success and without any appreciable result). The Prince, in fact, was a development of Spanish, French and English experience during the travail of national unification—which in Italy did not command sufficient forces, or even arouse much interest. — Antonio Gramsci, Selections from the Prison Notebooks, 582