The European slave trade began with Portugal's exploration of the west coast of Africa in search of a sea trade route to the East. The East had new resources, like spices and silk, and the Portuguese were hoping to acquire these goods without the hard journey by land from Europe to Asia.
Answer: Zheng He
He led seven ocean expeditions for the Ming Empire. These voyages were about diplomatic relations, military and more. The answer is Zheng He.
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Mansa Musa was the tenth emperor of the Mali Empire, located in west Africa. During his reign, in the beginning of 14th centyry, it is believed that Mali was the largest producer of gold in the world. This brought him enormous wealth.
Musa was known to be very generous. During his travels, he would donate gold to the poor or exchange it for other goods. This, however, harmed the ecnonomies of the cities and settlements he visited, due to the fact that the sudden influx of gold would make the value of this metal fall. On the other hand, the value of goods that were traded for gold suffered considerable rises. This was serious issue that would he himself would try to solve by borrowing all of the gold he could carry from money lenders in Cairo, Egypt on his way back.