When it came to the early 1500's, there was no separation of church and state. The king was always kept in check by the church. Although everybody in the kingdoms answered to the kings, the kings answered to God. All the rules that were put in place were done so in respect of the church's commandments, keeping in mind what God wanted the people to do.
Flooding and pollution of drinking water
Sunni Ali was the ruler of the Songhai Empire of the west Africa from 1465 to 1492. This dynasty was known to have its wide range of army that captured and fortified Timbuktu and Djenne. He conducted repressive policies against the scholars of Timbuktu, particularly in the Sankore region, with which he expelled to gain control of the town that Tuareg was handling. This was the time that a fleet patrolled the Niger River which lead to the surpassing of Mali Empire.
Because they invented the Olympics which was a challenge of strength and courage in their social structure. if the male population could not achieve this they were unworthy to marry and produce offspring..