Why were mosques originally built in the Ghana empire A) for the common people, who were mostly Muslim
B) for the king, who was a Muslim
C) for the Muslim merchants and visitors
D) for the invading Muslim armies, who forced the residents to build them

C) for the Muslim merchants and visitors

Explanation:

There were 12 mosques in the Empire's capital, for the visiting Muslim officials and for the Muslin population of the city, mostly merchants.

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