Final answer:
The Taiping Rebellion in the middle of the nineteenth century caused many Chinese people to flee their country due to the destruction and resultant famine.
Step-by-step explanation:
In the middle of the nineteenth century, many Chinese people fled their country due to the Taiping Rebellion. The rebellion was an uprising led by Hong Xiuquan, who believed himself to be 'God's Chinese son' and sought to impose a new moral order on society. The war's destruction of towns, farms, livestock, and crops left millions dead or dying from famine.