Mokokchung, where the Dr T Ao Trophy monolith has just been unveiled, is one of the three districts that came out of the Naga Hills Tuensang Area of 1957

Background

On 1 December 1957 parts of the Naga Hills District of Assam and the Tuensang Frontier Division of the North-East Frontier Agency were brought together to form the Naga Hills Tuensang Area.
The subdivisions of that area became the districts of Kohima, Mokokchung and Tuensang.
In February 1961 the area was renamed Nagaland.
In December 1963 Nagaland became the 16th state of India.
Kohima was named the capital of the new state on 1 December 1963.
Kohima had earlier been the headquarters of the Naga Hills District under Assam, and G H Damant was appointed Political Officer there in 1879.
Parts of Kohima district were carved out three times, as Phek in 1973, Dimapur in 1998 and Peren in 2003.