The Bengal Sultanate, officially the Sultanate of Bengal, was a Bengali Muslim state established in the eastern Indian subcontinent on the Bay of Bengal. It was an important power in South and Southeast Asian history. Its bordering countries included the Delhi Sultanate, Tibet and Burma. Immigrants from different parts of the Muslim world settled in Bengal, where the population also included Hindus and Buddhists. There was a synthesis in Bengali and other cultures, under which Bengali Muslim societies emerged throughout the region.