Answer:
"Zheng He was a Chinese mariner, explorer, diplomat, fleet admiral, and court eunuch during China's early Ming dynasty. Zheng He was a Chinese explorer who lead seven great voyages on behalf of the Chinese emperor. ... His seven total voyages were diplomatic, military, and trading ventures, and lasted from 1405 – 1433. However, most historians agree their main purpose was to promote the glory of Ming dynasty China."
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