The Tang dynasty (Chinese: 唐朝[a]) was an imperial dynasty of China preceded by the Sui dynasty and followed by the Five Dynasties and Ten Kingdoms period. It is generally regarded as a high point in Chinese civilization, and a golden age of cosmopolitan culture.[4] Its territory, acquired through the military campaigns of its early rulers, rivaled that of the Han dynasty, and the Tang capital at Chang'an (present-day Xi'an) was the most populous city in the world.
Because the middle class grew substantially and urbanization started.
Many Pro-Slave men came to the territory’s to vote people out of the territory’s weren’t allowed to vote so this was illegal. They also killed and fought abolitionists who wanted to vote against slavery so that made the north ( who were mainly against slavery) upset and the south happy.
The Answer is: C. district
