The issuer of this dinar was Marwan II (744-750 AD), the last Caliph of the Umayyad dynasty. The rapid subjugation of vast territories had gained many new adherents for Islam, as well as high honors for the conquerors; yet it also caused financial problems. The financial situation was even tightened by the practice of reducing taxes on converts to Islam. To stabilize the national treasure, all subjects were therefore to pay the same taxes. This caused much dissatisfaction among the Islamic populace. Besides, many Muslims considered the Umayyad rulers as too worldly. Hence in the year 747, a man called Abu Muslim managed to mobilize an army of dissatisfied. Over the following years the rebels conquered important centers of the Umayyads in Persia, and in 750 they fought the last decisive battle against the old rulers. Marwan II was killed in the process. Only one Umayyad prince escaped the bloodshed. He managed to flee to Spain, where the Umayyad dynasty continued to exist until 1031.