Consistency of traditions of Ancient Iran monarchy in Islamic Caliphate

Arab tribes of the Arabian Peninsula had entered a new phase of ruling by accepting Islam as their dominant religion. Conquering had started from the first Caliph but took a new shape through the second one. The newly turned Muslims started invading neighboring countries in the name of Islam including Iran and conquered them. Arabs then found it difficult to govern those eastern countries and their cities since it was so demanding and necessitated great consideration, calculation along with the enumeration of kharaj payers. Due to the facts that these conquerors were void of any civilized background and did not have any knowledge in this regard, they had to rely on domestic trained experts to help them do so. As a result, Arab conquerors by the help of Iranian Muslims and by getting acquaintance with the vast Sassanid bureaucracy restructured the governing system implementing slight modifications. Their best help in doing so were noble Iranian families which caused the transferring of the royal traditions and rituals to the new system. The main question, on which this research is based, is the study of the consequences of ancient Iranian royal traditions and rituals consistency on the Islamic Caliphate. The author, in order to get a solid answer in determining the variables of this consistency, has followed a descriptive-analytic based research along with a library-based study method. The conclusion is that: The Muslim governors and Caliphs by appointing Iranian as the heads of governmental and administrative bodies not only did consolidate Islamic structures of Caliphate, but also caused Iranian governing methods to remain intact and be transferred to the Islamic era hence their consistency!