The Constitution of 25 February 1959 was created by and then ratified vote of the Constituent Assembly of Niger, a body created for this purpose from the elected Territorial Assembly of Niger in December 1958. On 12 March 1959 the Constituent Assembly became the Legislative Assembly of Niger, with the head of government, Hamani Diori, retaining the title of President of the Council. Nominal executive powers were vested in the Assembly, with the constitution establishing elements, such as the Flag of Niger, the National anthem of Niger and the Coat of Arms of Niger, along with language on naming of political bodies, rights and powers which have been retained in subsequent texts.