ثورة الزنج
The Zanj Rebellion was a series of uprisings that took place between 869 and 883 AD near the city of Basra in present-day Iraq. Many Zanj were taken as slaves and were often used in strenuous agricultural work. In particular, Zanj slaves were used in labor-intensive plantations, harvesting crops such as sugarcane in the lower Mesopotamia basin of what is now southern Iraq. Harsh circumstances apparently provoked three rebellions in the late 7th and 9th centuries. What is now called the Zanj Rebellion was the largest of these.