B.
the US Interstate Highway System
Answer:
gold ivory was highly praise and considered a symbol of wealth in the empire of great Zimbabwe and in earlier Bantu cultures
China entity sponsored commercial expeditions in the Indian ocean in ships known as junks.
The Indian Ocean has been strategically located at the tip of the sea since ancient times, and its long coastline is the longest of any country on the Indian Ocean's rim, hence the name India.
This ocean occupies a unique place because of its features. As mentioned in Indian Ocean Facts, the water here has the highest concentration of dissolved and suspended hydrocarbons, the most negative water balance, and the highest and lowest salinity of any single water source.
City-states traded gold, ivory, and iron with landlocked kingdoms such as Greater Zimbabwe. These materials were sold to India, Southeast Asia, China, and elsewhere. These were African exports in the Indian Ocean trade. These items were in short supply in Asian countries and could be sold at a profit.
Learn more about the Indian Ocean here: brainly.com/question/24686699
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European powers provided support both military and technological wise to countries that are fighting the Islamic expansion
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