The correct answer is C) the migrants introduced Islamic culture, intermarried with Africans, and helped form a society that combined Asian, African, and Islamic traits.
The influx of migrants from the Arabian peninsula affected the lives of the coastal people of East Africa in that the migrants introduced Islamic culture, intermarried with Africans, and helped form a society that combined Asian, African, and Islamic traits.
The moment Muslim people arrived in East Africa, a peculiar mixture of cultures and ethnicities happened. The combination of Asia-African traditions made Islam one of the strongest belief systems in the region. Let's have in mind that Islam spread extensively not only through Africa, but also to the Middle East and some places in Europe such as the Iberian peninsula.