Baron de Montesquieu was noted for the theory of separation of powers. He developed this principle in his book entitled ''Espirit des Lois'' which means The Sirit of Laws'', published in 1748. Separation of powers may be defined as the division of governmental powers that exist in any given state into the three organs of government.
Reference: Anyaele, J.U.(2003): Comprehensive Government for Senior Secondary Schools. Page 69.