21st February(International mother language day)

January 1952:

The Fundamental Standards Council of the Constituent Gathering of Pakistan declares its proposals that Urdu ought to be the main state dialect. It starts off a wide flood of hatred in East Bengal where the general population spoke Bangla.

Government officials and understudies join their powers for a more extensive development under the authority of Maulana Bhashani of Awami Group.

As exhibits and unrests appear to gain out of power, the Administration splits around forcing a check in time in Dhaka; various demonstrators are killed before the Dhaka Therapeutic School over a time of one week.

21 February(The Language Martyrs Day):

The Principal Saints to kick the bucket for their local dialect: Rafiq, Salam, Jabbar, Barkat, and Salauddin. More kick the bucket in police shootings in the next days. A temporary commemoration is committed to these saints at the spot of killings: the Shaheed Minar turns into a symbol of the Bengalees' pride in their way of life and history, and of their protection against inconvenience of everything remote. The Shaheed Minar likewise turns into a place where numerous future developments for the essential privileges of the Bangalees are conceived.

Bangla was perceived as the second authority dialect of Pakistan on 29 February 1956, and article 214(1) of the constitution of Pakistan was rephrased to "The state dialect of Pakistan should be Urdu and Bengali."

21 February was declared the Global Mother Dialect Day by UNESCO on 17 November 1999.