Someone asks you to name the 22nd president of the United States, but you can’t remember. To aid your memory, the person then tells you that the president’s name is the same as that of a large city on Lake Erie. Upon hearing the hint, you instantly realize that Grover Cleveland is the answer. In this situation, the hint acted as a(n) .

Explanation:

mali had been a state inside of the ghanaian empire. after ghana fell because of invading forces and internal disputes, mali rose to greatness under the leadership of a legendary king named sundiata, the "lion king." the songhai empire, already weakened by internal political struggles, went into decline.

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.