Bangladesh was formerly known as East Pakistan, a region of Pakistan. However, because of disputes over the distribution of tax money and a desire for greater political autonomy, Bangladeshi forces joined with the Indian military to fight against West Pakistan, eventually creating the state of Bangladesh in 1971.
The name "Bangladesh" comes from the word "Bengali," which refers to the people of Bengali descent who make up a majority of the population of Bangladesh.
While India was under the control of the British Empire, Bengal was a province of British India. After India became independent, political leaders partitioned Bengal along religious lines, with the eastern, Muslim-majority portion becoming a part of Pakistan called "East Bengal." In 1955, its name changed to East Pakistan.