This doctrine originated under the US constitution, like the theory of separation of power its
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IF an organ of the government is left to itself completely and without any control it might misuse its power and become tyrannical and oppressive . The constitution therefore provides for a system of internal check and balances.
Under this doctrine, power of one organ of government are so devised as to exercise a check upon the power of the other organs of the government. This doctrine has been designed to promote overall equilibrium in the governance of the country.