How is the northern border different from the southern border

One of the stark and most obvious difference between the borders is that the South is heavily guarded, while the Northern border nearly has any guarding at all. That is the main difference between the two.

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im going to need some more info to answer this qeustion for you

the answer is:

to persuade readers that a conquering prince must destroy a former republic if he hopes to hold it.

in the excerpt from "the prince," the author niccolò machiavelli suggests that to take possession of a city and endure the control over it, it is necessary to destroy it first. otherwise, people who have known freedom will eventually turn against the new rulers and fight back to recover their power.