High Quality Content by WIKIPEDIA articles! The Batasang Pambansa (English: National Assembly, lit. National Legislature), also known by its nickname, the Batasan, was the former parliament of the Philippines, established as an interim assembly in 1978 and finally as an official body in 1984. Under the 1973 constitution, it replaced the former Congress established under the 1935 Commonwealth constitution. The Batasan was one of two unicameral parliaments in Philippine history, the other being the Malolos Congress under the 1899 constitution.