Who became a powerful center of learning and a center for Islamic religion

Mansa Musa's

After his return from Mecca, Mansa Musa began to revitalize cities in his kingdom. He built mosques and large public buildings in cities like Gao and, most famously, Timbuktu. Timbuktu became a major Islamic university center during the 14th century due to Mansa Musa's developments.

Explanation:

the correct answer on edgen is:

(c.) prevent the spread of communism.

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