Answer:
the explanation of how Rome held Capua, Carthage, and Numantia
the description of liberty as a rallying cry for rebellion in former republics
the example of the Florentines losing control over Pisa
Step-by-step explanation:
In the beginning, the author states how Rome held Capua by dismantling them, and did not lose them, which persuades the readers that a conquering prince must destroy a former republic if he hopes to hold it. The other two options all demonstrate how the author wants us to believe that a conquering prince must destroy a former republic if he hopes to hold it.