File:Millions fled across the border to the other country.jpg

English: A movie running in a continuous loop shows a freight train packed with desperate people on a run between India and Pakistan. (or vice versa). Massive population exchanges occurred between the two newly formed states in the months immediately following the Partition. The population of undivided India in 1947 was approx 390 million. After partition, there were 330 million people in India, 30 million in West Pakistan, and 30 million people in East Pakistan (now Bangladesh). Once the lines were established, about 14.5 million people crossed the borders to what they hoped was the relative safety of religious majority. The 1951 Census of Pakistan identified the number of displaced persons in Pakistan at 7,226,600, presumably all Muslims who had entered Pakistan from India. Similarly, the 1951 Census of India enumerated 7,295,870 displaced persons, apparently all Hindus and Sikhs who had moved to India from Pakistan immediately after the Partition. The two numbers add up to 14.5 million. Since both censuses were held about 3.6 years after the Partition, the enumeration included net population increase after the mass migration. (Amritsar, Punjab, northern India, Nov. 2017)