Who was Niccolo Machiavelli and why was he important to the Renaissance?

Niccolo Machiavelli was a Florentine political theorist and also a statesman. He is also considered a controversial figure in political history and has been  exclusive in his influence during the renaissance because of his manual in 1532, the prince.

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to replace ineffective because   andrew jackson's spoil system was a deliberate policy after he became president to remove federal employees he considered to be political opponents and replace them with his own supporters.