Most probably it came from Mongols, their ancestors.
The Mongols mainly came from Mongolia. In smaller numbers the Mongols also came from areas in China, and Russia.
Mongols were responsible for it. Plague came along with their armies.
All the mongols came in and killed people. It was bad.
No "China" as we think of it today
Mongols
Yes there are Mongols , people living in Mongolia are mongols.
The Mongols were a nomadic group of people who came from Mongolia and its surroundings like Inner Mongolia in China and Tuva in Russia. They created the biggest contiguous empire in history, from Eastern Europe to Korea to northern India to the Middle East.
The Mongols.
Where did the Mongols execute bugs?
first was general Muhammad bin Qasim, who was governor of Iran he came in 711. second was Mohammad Ghor, an Afghan warlord he came in 1192. and third was The Mongols who came in 1398.
Baghdad fell to the Mongols in 1258.