Heeeelp me please.
Which statement accurately describes an accomplishment of Emperor Yangdi that helped bring the Chinese together as one people?
A.
He brought a patchwork of small kingdoms under one rule by rebuilding the army.
B.
He helped spread Buddhism throughout Mongolia and Southeast Asia.
C.
He built a vast network of canals for trade and communication, known as the Grand Canal.
D.
He convinced Marco Polo to share the technology of Western Europe with all regions of China.
