sentences:  The Khwajah-i-Jahan Malik Sarwar, the first ruler of the dynasty was a wazir under Sultan Nasiruddin Muhammad Shah IV Tughluq (1390–1394).In 1394, amidst the disintegration of the Delhi Sultanate, he established himself as an independent ruler of Jaunpur and extended his authority over Awadh and a large part of the Ganges-Yamuna Doab and replaced much of the Delhi Sultanate.The dynasty founded by him was named so because of his title "Mālik-us-Śarq" ("ruler of the East").