(1) According to the materials, this paper summarizes the changes in the socio-economic situation of Guanzhong in Tang Dynasty compared with that of Qin Dynasty.
(2) Du You's criticism of the phenomenon that "one hundred talents, ten are farmers, and the rest are learning other skills" actually reflects the social and economic development.
Exhibition. Briefly analyze the causes and effects of this phenomenon.
answer
(1) decline in water conservancy projects; The agricultural harvest has declined; More and more people are engaged in industrial and commercial activities, and the agricultural labor force has decreased sharply.
(2) Reason: The improvement of agricultural technology and agricultural production level has changed the situation of ensuring agricultural income with human input.
Impact: Industry and commerce have gained the foundation of development, the population engaged in industry and commerce has increased, and commercial activities have tended to prosper.
The above is for reference only, I hope it will help you.