<P> In June 1946, the NNC submitted a four - point memorandum signed by T. Sakhrie; the then Secretary of NNC, to the still - visiting British Cabinet Mission . The memorandum stated that: 1 . The NNC stands for the solidarity of all Naga tribes, including those in un-administered areas; 2 . The Council protests against the grouping of Assam with Bengal; 3 . The Naga Hills should be constitutionally included in an autonomous Assam, in a free India, with local autonomy and due safeguards for the interests of the Nagas; 4 . The Naga tribes should have a separate electorate . </P> <P> On 1 August 1946, Nehru, President of the Indian National Congress Party in his reply to the memorandum, appealed to the Nagas to join the Union of India promising local autonomy and safeguards in a wide - ranging areas of administration . It was after 1946 only that the Nagas had asserted their inalienable right to be a separate nation and an absolute right to live independently . </P> <P> After the independence of India in 1947, the area remained a part of the province of Assam . Nationalist activities arose amongst a section of the Nagas . Phizo - led Naga National Council and demanded a political union of their ancestral and native groups . The movement led to a series of violent incidents, that damaged government and civil infrastructure, attacked government officials and civilians . The union government sent the Indian Army in 1955, to restore order . In 1957, an agreement was reached between Naga leaders and the Indian government, creating a single separate region of the Naga Hills . The Tuensang frontier was united with this single political region, Naga Hills Tuensang Area (NHTA), and it became a Union territory directly administered by the Central government with a large degree of autonomy . This was not satisfactory to the tribes, however, and agitation with violence increased across the state--including attacks on army and government institutions, banks, as well as non-payment of taxes . In July 1960, following discussion between Prime Minister Nehru and the leaders of the Naga People Convention (NPC), a 16 - point agreement was arrived at whereby the Government of India recognised the formation of Nagaland as a full - fledged state within the Union of India . </P> <P> Accordingly, the territory was placed under the Nagaland Transitional Provisions Regulation, 1961 which provided for an Interim body consisting of 45 members to be elected by tribes according to the customs, traditions and usage of the respective tribes . Subsequently, Nagaland attained statehood with the enactment of the state of Nagaland Act in 1962 by the Parliament . The interim body was dissolved on 30 November 1963 and the state of Nagaland was formally inaugurated on 1 December 1963 and Kohima was declared as the state capital . After elections in January 1964, the first democratically elected Nagaland Legislative Assembly was constituted on 11 February 1964 . </P>

Nagaland was formed in 1963. which state was it a part of earlier