1947 - India's independence

1956 - Nationalist Socialist Council of Nagaland formally founded

1963 - Nagaland becomes a separate state of India

1966 - Insurgency begins in Mizoram

1971 - East Pakistan becomes Bangladesh, triggering waves of economic migrants into the northeast Indian states and cutting off vital economic links

1972 - Manipur becomes a separate state of India

1974 - Tribal groups in Manipur start fight for separate homelands

1978 - Foundation of the People's Liberation Army in Manipur

1979 - Six-year Assam Agitation begins against foreigners, led by the All Assam Students Union
- Secessionist insurgency begins in Assam with founding of United Liberation Front of Asom

1985 - Delhi signs Assam Accord with the All Assam Students Union to end violence against foreigners

1986 - Mizo National Front signs a peace deal with the government bringing relative peace to the state of Mizoram
- Arunachal Pradesh becomes a separate state of India

1987 - Mizoram becomes a separate state of India

1988 - National Democratic Front of Bodoland is founded in Assam, initiating a guerrilla war

1990 - Fighting starts between Bodo and Santhal tribes in Assam. Government deploys the Indian Army to control the situation, leading to claims of human rights violations

1993 - Bodo Accord agreed between government and main armed Bodo wing

1994 - Thousands of Muslim migrants chased from their homes in Assam

1996 - Bodo Liberation Tiger Force forms from a group who rejected the 1993 accord

1997 - Government creates the Unified Command to strengthen operations against Assamese rebels. Naga separatists (NSCN) and the Indian government declare ceasefire

2000 - Bodo Liberation Tiger Force reaches ceasefire agreement with government

2001 - Government decision to extend a ceasefire with rebels in Nagaland to Naga rebels in surrounding states causes popular dissent and is reversed

2003 - Bodo Accord agreed between the Bodo Liberation Tiger Force and the government

2004 - Government says it is willing to begin peace talks with any rebel group that gives up violence, regardless of whether they have disarmed
- Delhi signs an autonomy agreement with the Bodoland Liberation Tigers

2005 - Thousands more Muslim migrants are chased from their homes in Assam. Insurgent groups from the Karbi and Dimasa tribes in Karbi Anglong in Assam begin fighting, displacing up to 50,000 people.
- The government opens dialogue with the National Democratic Front of Bodoland
- Creation of Autonomous Territorial Council for the Bodos, in Assam, which brings relative peace to western Assam
- Indian army begins a massive offensive against rebels in Manipur

2006 - Naga fighters (NSCN) extend their ceasefire by a year after talks in July with the government.

Jan 2008 - India imposes federal rule on Nagaland, following a no-confidence vote in the state assembly.