The correct answer is 2. He was a great leader of Songhai.
Sunni Ali was termed as the first king who was founded in the Songhai empire. He was located in Africa and in the Sunni Dynasty was the 15th ruler.
During time of Sunni Ali, his calvary and infantry, the different cities were being fortified and captured. For example, Djenne and Timbuktu.
Those scholars of Timbuktu who were of the region of Sankore and who were associating with Tuareg were expelled because Sunni Ali can get control of the town.
He organized a fleet which its work was to patrol Niger river. He ruled both the rural and urban muslims where there was co-existence of traditional beliefs which were being challenged.