The Ilyas  Shahi dynasty was overthrown in 1486 by Abyssinian eunuchs who ruled this sultanate for  eight years until Alauddin Husain Shah, an Arab from Turkestan, seized power and  expanded it west into Orissa and north into the upper Brahmaputra valley in Assam.
It became an independent kingdom in 1342 under Sultan Shamsuddin Ilyas Shah. The Ilyas  Shahi dynasty was overthrown in 1486 by Abyssinian eunuchs who ruled this sultanate for  eight years until Alauddin Husain Shah, an Arab from Turkestan, seized power and  expanded it west into Orissa and north into the upper Brahmaputra valley in Assam. Finally absorbed into the Mughal Empire by Akbar the Great, it was run by the Nawabs of  Murshidabad, who let the British East India Company establish a post at Calcutta. For 10  points, name this region covering part of present-day India and all of Bangladesh.
It became an independent kingdom in 1342 under Sultan Shamsuddin Ilyas Shah.
Bengal