From Wikipedia: "Chinnamul (alternate spelling Chhinnamul, The Uprooted) was a 1950 Bengali film directed by Nemai Ghosh. This was the first Indian film that dealt with the partition of India. The story revolved around a group of farmers from East Pakistan (now Bangladesh) who were forced to migrate to Calcutta because of the partition of Bengal in 1947. Russian film director Vsevolod Pudovkin came to Kolkata at that time, watched this film, and being inspired, he bought the print of this film to release in Russia. The film was shown in 188 theaters in Russia."