Respuesta :
Answer: D. The Swahili city-states were largely independent of one another. The
influence of Islam provided them with a common denominator.
Explanation:
Islam influenced the  relationship between the Swahili city-states because:
- D. The Swahili city-states were largely independent of one another. The influence of Islam provided them with a common denominator.
- According to the given excerpt, the author states that mosques played an important role in Swahili trade towns.
- The religion of Islam influenced the relationship between the neighboring states by making the dependent states become more homogenous
- Therefore, the correct answer is option D
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