Answer:
The Song dynasty helped survive military setbacks by encouraging innovation in technology and agriculture and supported an extensive trading system
Answer:
They encouraged innovation in technology and agriculture and supported an extensive trading system
Explanation:
Under the Song, the Chinese economy expanded because of improved farming methods and open border policy. The latter allowed a new type of faster-growing rice to be imported from Southeast Asia. Farmers were now able to produce two crops a year, one of rice and one of a cash crop to sell.