Which states were separated from Assam between the 1960s and early 1970s?

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Between the early 1960s and the early 1970s, several regions were separated from Assam to form new states or union territories:

  • Nagaland: In 1963, the Naga Hills district, along with part of the Tuensang area, was separated from Assam to become the 16th state of India.1
  • Meghalaya: Following its formation as an autonomous state within Assam in 1970, Meghalaya became a separate state in 1972, comprising the Khasi Hills, Jaintia Hills, and Garo Hills.1
  • Arunachal Pradesh: Formerly known as the North East Frontier Agency, it was separated from Assam as a union territory in 1972.1
  • Mizoram: Separated from Assam as a union territory in 1972, this region—formerly the Mizo Hills—later achieved statehood in 1987.12