Why did early African trading empires rise and fall?

The causes for all three kingdoms to rise and fall were based on leadership and economic issues. ... Mali rose as a result of strong military leadership and fell when the empire became too large for a weak king to rule. History repeated itself when the same happened to Songhai.

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most are appointed by the president and confirmed by a vote in the senate. however, appeals court judges appoint federal bankruptcy judges, and district judges appoint federal magistrate judges. the qualifications for these positions vary depending on the preferences of the person reviewing nominees.

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