Forty-fifth_Amendment_of_the_Constitution_of_India
The Forty-fifth Amendment of the Constitution of India, officially known as The Constitution (Forty-fifth Amendment) Act, 1980, extended the period of reservation of seats for the Scheduled Castes and Scheduled Tribes and representation of the Anglo-Indians in the Lok Sabha and the State Legislative Assemblies for another ten years, i.e. up to 26 January 1990.
Article 334 of the Constitution had originally required the reservation of seats to cease in 1960, but this was extended to 1970 by the 8th Amendment, and the 23rd Amendment extended this period to 1980. The 45th Amendment extended the period of reservation to 1990.[1] The period of reservation was extended to 2000, 2010, 2020 and 2030 by the 62nd, 79th, 95th and 104th Amendments respectively.