Zheng He, the warrior of Ming Dynasty  (China 15th century)

Zheng He, the warrior of Ming Dynasty ‘s eunuch, led the fleet and made a voyage to Africa.
The fleet of Zheng He used less bean sprouts and bitter melons for meals and therefore scurvy was less.

However, after the death of Zheng He, the Ming Dynasty weakened, voyage not being done.

If the Emperor of Ming encouraged more voyage and trade, Chinese might be used in the Americas and Africa since the middle of the 15th century, and Chinese might have become the world language.