Explanation:
 1) Continuous raids by Semitic nomads of the desert, mostly Berbers and Arabs.  These generally included Black Africans, Afro-Berbers and Afro-Arabs who had converted to Islam.
2) Dissatisfaction with the central government that tended progressively to undermine the traditional constitutions of both the parent-nuclear state and the formerly independent states which now made up the empire.
3) The desire for independence on the part of member states, or more security in an alliance with some other seemingly rising power, such as Mali.
4) Drought leading to famine was becoming more frequent, almost permanent condition. Farming, the occupation of the masses, was becoming too difficult to support life.
5) Stepped-up Arab-Berber raids on caravan trails, the life-line of the empire, lead to a decline in trade.
6) Â Failure to capture the Wangara gold mines, leaving the state in a precarious position of a dependent middleman.
7) Â The ruling class had become Muslims, introducing revolutionary changes in traditional constitutional practices
8) Religious Conflicts The African Muslim ruling class forcing Islam on the African masses lead to conflicts and people fleeing the country.
9) The increasing deforestation, erosion, reduced rainfall and uninhibited southward movement of the Sahara lead to the death of the soil.
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