Niccolo Machiavelli's book The Prince has become famous today for its what?

Nicolo Machiavelli was famous for his book "The Prince". It centers on the principles concerning politics. According to him, a ruler must be willing to use force to eliminate any threat to his rule and ensure the stability of his kingdom. Even if the acts are deceitful and immoral, what matters is that order is established and that it would endure for years to come. In short, Machiavelli believed that the ends justify the means. It also known as "Machiavellian".