Respuesta :
The main type of trade was sea trade, which was observed both before and after the Portuguese arrived.
Trade in the Indian Ocean:
The Indian Ocean Trade began around 800 A.D. with small trading settlements and ended in the 1500s when Portugal invaded and tried to profit from the trade. As trade between Africa and Asia increased, powerful city-states grew along Africa's eastern coast.
After the Portuguese took over trade in the Indian Ocean, they recognized the importance of Muslim sea trade routes and used them to trade goods.
In conclusion, sea trade was dominant both before and after the Portuguese came.
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