The short-lived Fédération du Mali.In January 1959, Senegal and the French Sudan merged to form the Mali Federation, which became fully independent on 20 June 1960, as a result of a transfer of power agreement signed with France on 4 April 1960. Due to internal political difficulties, the Federation broke up on 20 August 1960 when Senegal and French Sudan (renamed the Republic of Mali) each proclaimed independence.