The organization that led the Language Movement first was Tamaddun Majlish, a social and cultural organization based in Dhaka
Key details about the inception of the movement include:
- Establishment: Founded on September 1, 1947, by Professor Abul Kashem, a lecturer at Dhaka University, Tamaddun Majlish was the first organization to raise the demand for making Bengali one of the state languages of Pakistan.
- Initial Actions: The organization published a pamphlet on September 15, 1947, titled "Rashtro Bhasha Bangla Na Urdu?" (Bengali or Urdu as State Language?), which formally presented the demand.
- Formation of Action Committee: Tamaddun Majlish took the initiative to form the first Rastrabhasa Sangram Parishad (National Language Action Committee) in October 1947 to carry out the movement, with Professor Nurul Huq Bhuiyan as its convener.
While student bodies like the East Pakistan Student League (formed later in 1948) were instrumental in carrying the movement forward, Tamaddun Majlish is considered the initiating organization.