Final answer:
Indian Ocean trade networks were extensive and connected various regions, fostering the exchange of goods, ideas, and culture, particularly the spread of Islam, and highlighting the importance of controlling key trade routes and ports.
Step-by-step explanation:
Using the information provided by the map, a valid conclusion that can be drawn about Indian Ocean trade networks is that they were extensive and connected many different regions, including Africa, the Middle East, India, Southeast Asia, and China. These networks facilitated not only the exchange of goods like spices, silks, cottons, ivory, and gold but also the spread of ideas, religions, and cultures, as seen with the expansion of Islam and the rise of powerful Islamic states such as Indonesia. Control of strategic trade routes and ports, such as the Malacca Strait and the Swahili city-states, was essential for profit and influence in the region.