This paper is to examine the hypothsis that in view of some Muslim's Thinkers, every political system has been formed in the last period of prev ious political system by some of the usefulness competents simple – minded, truthfulness, bravery men. But ofter victory, these competents are contaminated to power corruption by themselves. They are also inclined to sociological and psychological backgrounds of despotism policies, luxurious, offortlessness. By the way, their government due to mentioned variables is inelined to old age and it is overthrown by another competents.
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