Conquest by Bengal Sultan (1338-1515) & settlement of Chakma’s at Ramu & Teknaf.

Sultan Fakruddin Mubarak shah conquered Chittagong including Hill Chittagong during 1338-49. In 1418, The Chakma king Mwan Tsni was driven out from upper Burma, because of his alleged disrespect towards Buddhism. He took shelter at Ali kadam under the muslim officer. He settled the Chakmas at Ramu and Teknaf.