1. Pakistan was divided from India in 1947, with Urdu declared the sole national language against Bengali protests.
2. In 1952, three students were killed in East Pakistan protests against Urdu, becoming symbols of resistance.
3. The first East Pakistan elections in 1954 saw the Awami League and other parties form a united front winning most seats. However the governor general soon dismissed this government.
4. The 1956 constitution established parity between East and West Pakistan and recognized Bengali as a national language, ending the early period of constitutional development.