The national language and official language of Bangladesh is Bengali according to the third article of the Constitution of Bangladesh.And the second most spoken language in Bangladesh is claimed to be Burmese which is spoken by the Marma tribe in chittagong hill districts as the districts border Myanmar and it's also spoken by the Rohingya people. 98% of Bangladeshis are fluent in Bengali (including dialects) as their first language. Bengali Language Implementation Act, 1987 made it mandatory to use Bengali in all government affairs except in the cases of foreign relations. According to a 2011 census, Bengali is predominantly spoken by 98% of the country's population and it also serves as the national language of the nation. The indigenous people of northern and southeastern Bangladesh speak a variety of native languages.