sentences:  The Sultanate was founded by Ali Mughayat Syah, who began campaigns to extend his control over northern Sumatra in 1520.His conquests included Deli, Pedir, and Pasai, and he attacked Aru.His son Alauddin al-Kahar (d. 1571) extended the domains farther south into Sumatra, but was less successful in his attempts to gain a foothold across the strait, though he made several attacks on both Johor and Malacca, with the support along with men and firearms from Suleiman the Magnificent's Ottoman Empire.