The principals of governmental legality of Tugrul Seljuks

The governments that came in power through out the history of Iranafter Islam, correctly or falsely tried to relate their own background in any kind to the ruler families in ancient Iran. Taherid reffered themselves to Rostam the legendary hero of Iran. Samnids cited their ancestor Bahram the Gur the great Sasanian king. Among these, Ghaznavids who was Turk race also from slavery reached to command of military and regin, they did not back down from this racial competition. They claimed that, Yazdgerd III, the last Sasanian king during his escape in Transoxina, sought refuge to Turks Khan and got married with Khan's daughter. Thus Mahmood isfrom the generation of the child who was conceived from that relationship. In such a time the new authorities will be legal when they in somehow bounded with the a race and blood of royal family. Some tribs marched towards the central Iran from Transoxina, they could not claim to such a relationship. In top of these tribs was the clan of Seljuks, which was led by Tugrul. those came forth and washed away all pity and great Iranian rulers. Ghaznawids, Ziyarid dynasty, Mosaferiyan, Jastaniyan, Shaddaiyan, Ravadyan, Hasanuyeh Kord, and even Qaramatiyan of Bahrain beyond the Persian gulf, as for as the conquest was completed, each conqueror could do it. But Tugrul, such as Gangiz did not come to return, he came to stay. He, his clan and his tribe came to Iran. Which trick he applied for his continues domination on Iran, and it's justification and legitimacy is the purpose of this article. This study trying to gather informations, categories, anylsis and interpret the informations to determine the principles of Tugrul government legality.