Bangladesh
In 1206, a Muslim kingdom called the Delhi Sultanate was founded. The rulers of the Bengal delta became friendly with the sultanate, and to stay separately ruled the Bengal rulers would pay tribute to the sultanate using war elephants.  In 1341, Bengal became independent from Delhi, and Dhaka became the capital of independent Bengal.  In 1576, Bengal was taken over by Akbar the Great, a Mughal emperor. Bengal stayed part of the Mughal Empire until the eighteenth century.