Bangladesh (Bengali: বাংলাদেশ):The People's Republic of Bangladesh (Bengali: গণপ্রজাতন্ত্রী বাংলাদেশ Gônôprôjātôntrī Bāṅlādeś), is a country in South Asia, located on the fertile Bengal delta. It is bordered by the Republic of India to its north, west and east, by the Union of Myanmar (Burma) to its south-east and by the Bay of Bengal to its south. It is separated from the Democratic Republic of Nepal and the Kingdom of Bhutan by the narrow Indian Siliguri Corridor. Together with the neighbouring Indian states of West Bengal and Tripura, it makes up the ethno-linguistic region of Bengal. The name Bangladesh means "Country of Bengal" in the official Bengali language. The borders of modern Bangladesh took shape during the Partition of Bengal and British India in 1947, when the region became the eastern wing of the newly formed state of Pakistan. Following years of political exclusion, ethnic and linguistic discrimination, and economic neglect by the politically dominant western wing, a surge of popular agitation, nationalism and civil disobedience led in 1971 to the Bangladesh Liberation War, resulting in the separation of the region from Pakistan and the formation of an independent Bangladesh. Bangladesh is a parliamentary republic with an elected parliament called the Jatiyo Sangshad. With a population of more than 160 million people in a territory of 56,977 sq mi, Bangladesh is the world's eighth most populous country, as well as one of the world's most densely populated countries. The Bengalis form the country's predominant ethnic group, whereas the indigenous peoples in northern and southeastern districts form a significant and diverse ethnic minority. Bangladesh is dominated by the Ganges-Brahmaputra delta and is subject to annual monsoon floods and cyclones. The delta has a rich and diverse cultural heritage. The four largest religions in the country are Islam (89%), Hinduism (9%), Buddhism (1%) and Christianity (0.5%) More than 98% of Bangladeshis speak Bengali as their mother tongue as it is the official language. It is an Eastern Indo-Aryan language with its own script. English is used as a second language among the middle and upper classes. English is also widely used in higher education and the legal system. Islam is the largest religion of Bangladesh。Islam contributing 90.4% of population, Hinduism contributing 8.2% of the population, Buddhism contributing 0.7% of the population, Christianity with 0.6% and others of 0.1% of the population.