Answer: Madison's motivation to establish a just seperation of powers is for the "preservation of liberty", to remain the claimed title of being America the free. The provisions giving these checks and balances for each group to be autonomous but not too controlling over the other fuels Madisons reasoning well. Madison states that evry department should have their own governing party, with "little agency as possible in the appointment of the members of others" eliminating the nepotism they saw in the British monarchy.
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