sentences:  With the rise of Gopala in 750 AD, Bengal was united once more under the Buddhist Pala Empire until the 12th century than being succeeded by the Hindu Chandra dynasty, Sena dynasty and deva dynasty.After them, Bengal was ruled by the Hindu Maharajas of kingdoms such as Chandradwip and Cooch Behar.After the Muslim conquests in the Indian subcontinent, Bengal was ruled by Muhammad bin Bakhtiyar Khalji, under whom Indian Islamic missionaries achieved their greatest success in terms of dawah and number of converts to Islam, which caused the decline of Buddhism.