<Tr> <Td_colspan="2"> It was elevated to the status of a full State by the State of Mizoram Act, 1986 </Td> </Tr> <P> Mizoram (English: / mɪˈzɔːrəm / (listen)) is a state in Northeast India, with Aizawl as its capital city . The name is derived from "Mizo", the name of the native inhabitants, and "Ram", which means land, and thus Mizoram means "land of the Mizos". Within the northeast region, it is the southernmost landlocked state, sharing borders with three of the Seven Sister States, namely Tripura, Assam and Manipur . The state also shares a 722 kilometre border with the neighbouring countries of Bangladesh and Myanmar . </P> <P> Like several other northeastern states of India, Mizoram was previously part of Assam until 1972, when it was carved out as a Union Territory . It became the 23rd state of India, a step above Union Territory, on 20 February 1987, with Fifty - Third Amendment of Indian Constitution, 1986 . </P> <P> Mizoram's population was 1,091,014, according to a 2011 census . It is the 2nd least populous state in the country . Mizoram covers an area of approximately 21,087 square kilometres . About 91% of the state is forested . </P>

When did mizoram became a state of india