Aside from developing contacts with the Ahom kingdom, which was established in 1228 in Assam, the Nagas generally lived an isolated existence from the outside world.
The colonial authorities responded by launching a series of successive punitive expeditions, which brought this resistance to an end.
[4] During World War I, 2,000 Nagas enlisted in the British Indian Army (BIA) and served in the Western Front.
In World War II, a larger number of Nagas enlisted in the BIA and fought in the Burma campaign against invading Japanese forces.
[5] After India became independent from British rule in 1947, the Naga became Indian citizens, though an ongoing ethnic conflict exists in the region since 1958.
It led to them dropping many customs and traditions and, along with the spread of British-style educational systems, was part of the arrival of modernity in the Naga hills.
Miles Bronson in 1839, who stayed for a short period among Nocte Naga in Namsang under Tirap district of present day Arunachal Pradesh.
[7] As the people adopted Christianity, they began to develop more of a "Naga" identity, a radical departure from their distinctions based on warring villages.
Angami Zapu Phizo led the initial movement with the Naga National Council (NNC).
In May 1951, the NNC claimed that 99 per cent of the Naga people supported a referendum to secede from India, which was summarily rejected by the government in New Delhi.
In its third Convention held at Wokha from 31 January – 2 February 1964 which was said to have been attended by 5,000 representatives from all ethnic groups of Nagaland, the NBCC made a historic resolution welcoming the proposed "Peace-Talk" and to request the Government to make available the services of Jayaprakash Narayan, Bimala Prasad Chaliha and Rev.
The first round was held on 18–19 February in New Delhi and the Naga delegation was led by Kughato Sukhai, their Prime Minister.
On 3 August 1968, "Gen" Kaito, a Naga leader, was assassinated in broad daylight in the heart of Kohima town.
On 8 August 1972, the Chief Minister Hokishe Sema was ambushed by suspected Naga members near Kohima.
Longri Ao, Kenneth Kerhuo, L. Lungalang, M. Aram, and Lungshim Shaiza, had requested Kevi Yalley to be a spokesperson for the Nagas.
The National Socialist Council of Nagaland (NSCN) was formed in the late 1970s by Thuingaleng Muivah, Isak Chishi Swu and S. S. Khaplang.
In Manipur particularly, ethnic violence erupted between the Nagas and Kukis, with both sides suffering hundreds of casualties.
The ceasefire declaration was followed by setting up of a Cease-fire Monitoring Cell to enforce the Ground Rules as laid down by Government of India.
However, according to the UNPO, in 2009 the NSCN considered the biggest impediment to peace to be the refusal of the government of India to officially extend the ceasefire to all Naga-inhabited areas outside of Nagaland.