Four dynasties based in Delhi succeeded the Slave dynasty. The Khaljis ruled from 1290 to 1320. The Tughluq dynasty's rule lasted until 1413. Sayyid rule ran from 1414 to 1451. The Lodhi dynasty ruled in the 1451-1526 period. But the writ of the Delhi Sultanate had been weak in its outer regions and Bengal like other similar areas turned into an independent region. Shamsuddin Ilyas Shah became the ruler of independent Bengal in 1342 and his dynasty ruled until 1486, barring a short interlude. He had come to power after a Bengali revolt against the Tughluq dynasty's governor. Shamsuddin drove up the Ganges to contest Tughluq rule. The Tughluqs, in return drove Ilyas Shah out of Pandua into eastern Bengal. Shamsuddin reclaimed Pandua and continued ruling Bengal. Shamsuddin's heir repelled Tughluq incursions and like his predecessor expanded the dynasty's authority into Bihar.
Four dynasties based in Delhi succeeded the Slave dynasty. The Kh.aljis ruled from 1290 to 1320. The Tughluq dynasty's rule lasted until 1413. Sayyid rule r.an from 1414 to 1451. The Lodhi dynasty ruled in the 1451-1526 period. But: the writ of the Delhi Sultanate had been weak in its !outer regions and Bengal like other similar areas turned into an independent region. Shamsuddin Ilyas Shah became the ruler of independent Bengal in 1342 and his dynasty ruled until 1486, barring a short interlude. He had come to power after a Bengali revolt against the Tughluq dynasty's governor. Shamsuddin drove up the Ganges to contest Tughluq rule. The Tughluqs in return drove Ilyas Shah out of Pandua into eastern Bengal. Shamsuddin reclaimed Pandua and continued ruling Bengal. Shamsuddin's heir repelled Tughluq incursions and like his predecessor expanded the dynasty's authority into Bihar.