Gaafar Nimeiry
The war ended with the signing of the 1972 Addis Ababa Agreement which granted autonomy to the Southern region of Sudan. After an 11 year period of resolution, then president Gaafar Nimeiry declared all of Sudan, including the autonomous Southern region, to be an Islamic state. This declaration ended the Addis Ababa Agreement and removed autonomy from Southern Sudan, sparking the Second Sudanese Civil War from 1983 to 2005.