Khawaja Nazimuddin was East Bengal's first chief minister with Frederick Chalmers Bourne its governor. The All Pakistan Awami Muslim League was formed in 1949. In 1950, the East Bengal Legislative Assembly enacted land reform, abolishing the Permanent Settlement and the zamindari system. The 1952 Bengali Language Movement was the first sign of friction between the country's geographically-separated wings. The Awami Muslim League was renamed the more-secular Awami League in 1953. The first constituent assembly was dissolved in 1954; this was challenged by its East Bengali speaker, Maulvi Tamizuddin Khan. The United Front coalition swept aside the Muslim League in a landslide victory in the 1954 East Bengali legislative election. The following year, East Bengal was renamed East Pakistan as part of the One Unit program and the province became a vital part of the Southeast Asia Treaty Organization.