“The decline of the Fatimids was the result of external challenges.” To what extent do you agree with this statement?

The question requires that candidates consider the merits or otherwise of the argument that external challenges led to the decline of the Fatimids. These military challenges to the caliphate contributed to its territorial contraction and eventual demise; they may include those posed by the Seljuk Turks, the Crusades and Saladin. Candidates may also stress the rebellion of the Zirids, who pledged allegiance to the rival empire of the Abbasids. However, to balance their arguments, candidates may argue that internal challenges such as dynastic disputes and rivalries, racial and doctrinal conflicts, as well as economic weakness were contributory factors. Candidates may also refer to the growing independence of army generals from the caliph. Candidates may agree, partly agree or disagree with the statement.