The Grand National Assembly of Turkey, usually referred to simply as the TBMM or Parliament, is the unicameral Turkish legislature. It is the sole body given the legislative prerogatives by the Turkish Constitution. It was founded in Ankara on 23 April 1920 amid the National Campaign. This constitution had founded its pre-government known as 1st Executive Ministers of Turkey in May 1920. The parliament was fundamental in the efforts of Mareşal Mustafa Kemal Atatürk, 1st President of the Republic of Turkey, and his colleagues to found a new state out of the remnants of the Ottoman Empire.