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22 April in Indian and World History

22 April is the birth anniversary of Akbar II, Atul Kasbekar, and Chetan Bhagat and the death anniversary of Jogesh Chandra Chatterjee, and Manguram. 10th Olympic Games began in Athens, Greece in 1906. Persia, Turkey, and Afghanistan signed a security treaty in 1926. Egypt and Iraq signed a peace agreement in 1931. Earth Day was celebrated for the first time in the world in 1970. In 1977, Optical fibre was first used in telephone traffic. In 1983, the spacecraft “Soyuz T-8” returned to Earth.