Karaki, an outstanding Faqih in 10th century (AH), was the first to cooperate with the Safavids, hence founding the basis for the convergence of the ulama and the state in the Safavid era. His theoretical contribution lies on the proposal of the theory of the Sovereignty of Faqih.
With Karaki being scientifically and politically famous, his theory soon became wide-spread in this period and was even reflected in Shah Tahmasb's commandment in 937 (AH).
Despite having a close relationship to the Safavids, Karaki was by no means after proving an independent legitimacy for them and for sultanate as a whole, though he believed supporting the Safavids was beneficial for the Shiites at that time.