The group was reorganized to form NNC in 1946 at Sanis (in present-day Wokha district), with Eno T. Aliba Imti Ao as the President, and other democratically elected Naga representatives as its members.
T Aliba Imti Ao, was the son of a Imtilepden of Lonjang village, he was the first teacher amongst the Nagas and also served as a pastor.
[3] In a memorandum presented to the British Government in June 1945, the NNC demanded an autonomous status for the Naga region.
[citation needed] When the report of the 1946 Cabinet Mission to India was published, NNC passed a resolution on 19 June 1946 at Wokha in Mokokchung division.
As a result of this resolution, on 20 February 1947, it submitted a proposal for interim Government of Nagas, under a "Guardian Power" for a period of ten years.
However, Pawsey had left Kohima shortly before the arrival of the subcommittee, on an investigation into a headhunting report received from the unadministered area.
Kevichüsa Angami, the senior extra assistant commissioner at Kohima, acted as the guardian angel of the NNC.
[9] The secretary of the subcommittee observed:[9] On the whole, the attitude of the NNC and the general atmosphere seemed to have taken an unpleasant turn, since the (Assam) Premier's visit (in November 1946).
It was clearly perceived that the Council was now dominated by certain Angami leaders like Kevichüsa and Lungalang and the more reasonable elements were prevented from asserting themselves (a) on account of the Naga system of not deciding matters by a majority but by a general agreement only, and
As a result of his efforts, on 26 June 1947, Sir Muhammad Saleh Akbar Hydari, the Governor of Assam, reached a Nine-Points Agreement with the Naga leaders.
[12] He met the Assamese, Garos, Khasis, Lushais, Abors, Mishmis and Meiteis leaders in an attempt to convince them to form independent countries of their own, instead of joining the Union of India.
[citation needed] In July 1947, as Phizo had set out to take a delegation to Delhi to meet national leaders, the Deputy Commissioner Pawsey sent a telegram, via Governor Hydari, stating that they represent an "unimportant minority" and that they should be ignored.
[7] On 14 August 1947, one day before India gained its independence, Phizo sent a telegram to Delhi with hope and defiance announcing his organisation's resolve to lead a free Naga national.
Also, the bulk of the educated Naga people worked outside the region, and the Indian Government had banned its employees from participating in the plebiscite.
[20] Some days later, a goodwill mission of APCC led by its President Bimala Prasada Chaliha visited Naga Hills District.
It was followed by another goodwill mission of the Assam Unit of the Praja Socialist Party (PSP), led by its president, Hareswar Goswami.
[21] In September 1954, Phizo formed the "People's Sovereign Republic of Free Nagaland", with the support of Chang chiefs of Tuensang.
In 1955, the Angami leaders T. Sakhrie (who had served the secretary of NNC since its inception) and Zasokie broke off with Phizo at a meeting in the Khonoma village.
In January 1956, the Naga Hills District was declared a "Disturbed Area", putting it under the Indian Army's command.
[17] The secessionist movement declined to a great extent after the formation of Nagaland as a new state of India in 1963, with the Naga leader P. Shilu Ao as its chief minister.
On 11 November 1975, a 6-member delegation, which included Phizo's brother Kevi Yallay, signed the Shillong Peace Accord with the Government of India.
[23] NNC's Vice President Isak Chishi Swu and General Secretary Thuingaleng Muivah denounced the Accord, calling it a "complete sellout of the Naga rights".
[23] On 21 November, Isak, Muivah, Lorho, Venuh, Moire and Pamrei officially condemned the Accord, dubbing its supporters as traitors.
[24] Subsequently, in 1980, a faction led by Isak, Muviah and SS Khaplang broke away from NNC to form the National Socialist Council of Nagaland (NSCN), which continued the secessionist activities.