Among more than 100 caliphs, since the birth of the caliphate system, they have been on the chairs of government in 4 countries; About 25 of them ended with death .. Each of them was either assassinated by surprise, or killing in a defense battle against a rebel, or a execution after a defeat from a competitor .. Most of them remained the secret of his murder a mystery to this day .. Some of them became famous in history books, However, most of them did not get the same share of fame .. For those who pledged allegiance to their wrestler on the day they were prevented from the caliphate .. On the one who was raised to the ruling chairs; They were as if they were raised to their coffins ... about the blood of the caliphs .. We are talking ..