Emperor Wen of the Sui Dynasty ended the Northern and Southern Dynasties in 589 A. D. Why is this action considered to be one of
his greatest achievements?
A. It signaled the beginning of Chinese expansion into other countries.
B. It reunified China under a single ruler for the first time in many years.
C.
It reunited China under a single state sponsored religion.
D. It allowed the Chinese people to speak the same language.