What actions by Sui and tang emperors helped reunify China?

Answer 1

The Sui and Tang emperors implemented several key actions that helped reunify China after a period of fragmentation. The Sui Dynasty, under Emperor Yang, constructed the Grand Canal, enhancing trade and communication between the north and south. The Tang Dynasty continued these efforts by promoting a merit-based civil service system, which created a more efficient and centralized government. Additionally, the Tang expanded territorial control and fostered cultural and economic prosperity, further solidifying unity across the region.