Ineed ! what were the achievements of the yuan and ming dynasties?

The Ming Dynasty ruled China from 1368 to 1644 A.D., during which China's population would double. Known for its trade expansion to the outside world that established cultural ties with the West, the Ming Dynasty is also remembered for its drama, literature and world-renowned porcelain

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The Bantu were known for the use of iron working of technology. The Bantu were not highly advanced technologically, but they did start the use of iron. The Bantu introduced iron working during the year 400 BC. The Bantu made their weapons from iron and whenever they faced other violent tribes, they used these weapons