*Sultan Ahmad Sanjar was the longest Muslim ruler who ruled over half the world in the 1100th century.* *Sultan Ahmad Sanjar. The grandson of Sultan Muhammad Alp Arslan, the father of the conquest of Islam in the decade of The third greatest Sultan who ruled over half the world under the shadow of Islam in 1000, Sultan Ahmad Sanjar, the son of Sultan Malik Shah, ruled over half the world under the shadow of Islam from 1119 to 1157. He was the last and best Sultan of Seljuq Empire who ruled over half the world* *Tribute to the last and great Sultan of Great Seljuq Empire*