54 years ago today, December 17, 1971 (October 30, 1971 in the lunar calendar), the war between India and East Pakistan ended. In December 1971, the war between India and East Pakistan ended. On December 16, Indian troops occupied Dhaka. On December 17, the two sides reached a ceasefire agreement. In this war, India occupied approximately 2240 square kilometers of territory in Pakistan. East Pakistan became independent Bangladesh. Pakistan and India were originally one country. In 1858, the entire South Asian subcontinent became a British colony. In 1947, the United Kingdom announced the "Mountbatten Plan", which divided British India into two countries: India and Pakistan according to religious beliefs. After Pakistan's independence, the political situation was turbulent. In March 1971, Mujib Rahman launched a non-cooperation movement in East Pakistan. Later, East Pakistan was declared independent and Bangladesh was established. Pakistan President Yahya Khan immediately launched a military crackdown on East Pakistan. In December of the same year, India, with the support of the Soviet Union, launched an armed attack on Pakistan and dismembered Pakistan.