sentences:  After being absorbed to the Bengal Subah by Babur in the 16th century during the defeat of Sultan Nasiruddin Nasrat Shah in the Battle of Ghaghra, Bengal became the most economically advanced region in the world, and started to be ruled by the Subahdars of the Mughal Empire.Emperor Akbar developed the Bengali Calendar and began to preach the newly invented religion of Din-i Ilahi, which was declared by the Qadi of Bengal to be a blasphemy.Islam Khan I declared Dhaka as the capital of Bengal, which was then known as Jahangir Nagar, renamed after emperor Jahangir.