Which philosopher classified governments as republics monarchies and despotisms?

Charles de Montesquieu was the French philosopher who classified governments as republics, monarchies and despotisms. this great philosopher was born on 18th of January in the year 1689 and died on 10th of February in the year 1755. He died at the age of 66 in Paris of France. He was also a good French lawyer who lived during the Age of Enlightenment. He is famous because of the theory of "Separation of Powers". His theory has been implemented by several countries around the world. 

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