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Zakir Hussain died (3rd president of India)
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Maharashtra Pollution Control Board was established under the provisions of Maharashtra Prevention of Water Pollution Act
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Indo-Pakistani War of 1971 was started, direct military confrontation between India and Pakistan
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Manipur gets statehood
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India and Bangladesh sign a friendship treaty, after the withdrawal of the Indian troops
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Karnataka State is formed
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India successfully detonates its first nuclear weapon in the Thar Desert
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The first Indian satellite, Aryabhata, goes into Earth's orbit
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Nehru Planetarium commissioned
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Indira Gandhi is arrested and jailed for a week for breach of privilege and contempt of parliament
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President of India makes official the decision to set up the Mandal Commission