Answer:
India - 1947
Pakistan - 1947
Bangladesh - 1971
Sri Lanka - 1972
Explanation:
India became independent from British rule on August 15th, 1947
Pakistan became independent from British rule and India on August 15, 1947 (Partition of India)
Bangladesh became independent from Pakistan on December 16th, 1971
Sri Lanka became independent from British rule on May 22, 1972
