Formation of All India Muslim League in Dhaka on 1906
Reunification of Bengal 1912
Formation of East Pakistan 1947
Military rule by Pakistan Army 1958
Indo Pakistani war of 1965 and blockage of trade
1969 uprising in East Pakistan
1970 election victory by Sheikh Mujibur Rahman and Military's refusal to accept the results
Bangladeshi Flag raised for first time March 23rd 1971
Genocide by Pakistan Army (Operation Searchlight)
Bangladesh Liberation war begins. Mukthi Bahinis vs Pakistan Army
2 December 1971 Pakistan attacks India and India joins the war on Bangladeshi side
16 December 1971 Pakistan surrenders
4 December 1972 Constitution adopted
Rahman Assassinated and era of Military coups 1975-1991
India's Relations with Bangladesh
India's boundary with Bangladesh is its longest land boundary.
It is patrolled by the Border Security Force (BSF) which also patrols the western border with Pakistan.
India's relations with Bangladesh has been a complex mixture of success and failures.
Due to Indian assistance for liberation of Bangladesh, Sheik Mujibur Rahman have had quite a favourable view towards India.
However his untimely death and the successive military rules derailed the relationship, which the Pakistani government capitalized on. The critics of Mujibur Rahman have used India as a scapegoat for their anger and frustrations towards him.
India has also accused Bangladesh of providing safe havens for Insurgents in the North Eastern States and also of large scale illegal migration into West Bengal and Assam. A major part of Assam accords and the consequent National Register of Citizens is aimed at curbing this migration.
The presence of a large number of exclaves and enclaves in the Indo Bangladeshi Border has also been a bone of contention.
However in the recent years, there have been significant improvements in the relations.
Bangladesh is a major player in India's Act East policy.
100th Constitutional Amendment Act of 2015 have solved the issues of enclaves and exclaves to a large degree.
Bangladesh government have been helping India with tackling cross border terrorism.
Bangladesh-Bhutan-India-Nepal (BBIN) initiative for better connectivity is in the works.
Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation (BIMSTEC) is another major avenue for cooperation.
The remaining issues:
The conduction of NRC and the fate of those deemed to be illegal immigrants is unclear and a cause for concern.
The lukewarm response by Indian Government to the plight of Rohingyas was criticised by Bangladesh.
The lack of clarity about the distribution of water from Teesta River is another point of conflict.