Claim: Bangladesh has ethnic groups.

Bangladesh -LRB- -LSB- bæŋɡləˈdɛʃ -RSB- -LSB- ˌbɑːŋɡləˈdɛʃ -RSB- -LSB- : bn : বাংলাদেশ , বাংলাদেশ -RSB- , -LSB- ˈbaŋlad̪eʃ -RSB- , lit . `` The country of Bengal '' -RRB- , officially the People 's Republic of Bangladesh , is a country in South Asia . It shares land borders with India and Myanmar -LRB- Burma -RRB- . Nepal , Bhutan and China are located near Bangladesh but do not share a border with it . The country 's maritime territory in the Bay of Bengal is roughly equal to the size of its land area . Bangladesh is the world 's eighth most populous country . Dhaka is its capital and largest city , followed by Chittagong , which has the country 's largest port .   Bangladesh forms the largest and eastern part of the Bengal region . Bangladeshis include people of different ethnic groups and religions . Bengalis , who speak the official Bengali language , make up 98 % of the population . The politically dominant Bengali Muslims make the nation the world 's third largest Muslim-majority country . Most of Bangladesh is covered by the Bengal delta , the largest delta on Earth . The country has 700 rivers and 8,046 km -LRB- 5,000 miles -RRB- of inland waterways . Highlands with evergreen forests are found in the northeastern and southeastern regions of the country . Bangladesh has many islands and a coral reef . It is home to the Sundarbans , the largest mangrove forest in the world . The country 's biodiversity includes a vast array of plant and wildlife , including critically endangered Bengal tigers , the national animal .   The Greeks and Romans identified the region as Gangaridai , a powerful kingdom of the historical subcontinent , in the 3rd century BCE . Archaeological research has unearthed several ancient cities in Bangladesh , which had international trade links for millennia . The Bengal Sultanate and Mughal Bengal transformed the region into a cosmopolitan Islamic imperial power between the 14th and 18th centuries . The region was home to many principalities that had inland naval prowess . It was also a notable center of the worldwide muslin and silk trade . As part of British India , the region was influenced by the Bengali renaissance and played an important role in anti-colonial movements . The Partition of British India made East Bengal a part of the Dominion of Pakistan ; and was renamed as East Pakistan . The region witnessed the Bengali Language Movement in 1952 and the Bangladesh Liberation War in 1971 . After independence , a parliamentary republic was established . A presidential government was in place between 1975 and 1990 , followed by a return to parliamentary democracy . The country has also been affected by poverty , natural disasters , hunger , dominant party systems and military coups .   Bangladesh is a middle power and a major developing nation . Within South Asia , the country ranks first in gender equality , second in foreign exchange earnings and third in life expectancy and peacefulness . Listed as one of the Next Eleven , its economy ranks 46th in terms of nominal gross domestic product -LRB- GDP -RRB- and 29th in terms of purchasing power parity -LRB- PPP -RRB- . It is one of the largest textile exporters in the world . Its major trading partners are the European Union , the United States , China , India , Japan , Malaysia and Singapore . With its strategically vital location between Southern , Eastern and Southeast Asia , Bangladesh is an important promoter of regional connectivity and cooperation . It is a founding member of SAARC , BIMSTEC , the Bangladesh-China-India-Myanmar Forum for Regional Cooperation and the Bangladesh Bhutan India Nepal Initiative . It is also a member of the Commonwealth of Nations , the Developing 8 Countries , the OIC , the Non Aligned Movement , the Group of 77 and the World Trade Organization . Bangladesh is one of the largest contributors to United Nations peacekeeping forces .