Question

The cities along the east coast of Africa traded with the Muslim merchants of the Arabian peninsula. Knowing this we can expect that

1
Islam spread to eastern African cities
2
African military strength overpowered the Muslims
3
each culture traded goods but did not mix cultures
4
Muslims preferred African art to their own

help!!

Answer 1

I believe, it's 1. Because back then trading also brought influence to neighboring coasts. So, maybe it spread out.