A Chinese Explorer
He sailed from 1405 to 1433. After his father was killed he was captured as a slave. While a slave he rose up the ranks to become the most powerful general.
HIs ships navigated the wide sea area from Ryukyu Islands, the Philippine Islands and Maluku Sea to the Mozambican Channel and the costal areas of South Africa, developing mutual trade, exchanging culture and technologies, communicating traffic on the sea and promoting social and economic development.
He went on these voyages to obtain recognition and gifts from other rulers. The outcome of his voyages were just this.
Led China to become the superpower of the Indian Ocean
He rounded the Cape of Good Hope seventy-six years before Vasco de Gama
He circumnavigated the globe one hundred years before Ferdinand Magellan
Some say that he reached the Americas decades before Christopher Columbus