What influence did China's ancient commercial development have on China?

(1) development foundation. The development of agriculture brings the increase of agricultural products and the prosperity of farmers, and the development of handicraft industry brings the increase of handicraft products, which need to be exchanged. This process is completed by businessmen through business. Therefore, the development of agriculture and handicrafts is the basis of commercial development. (2) National political situation, national unity and social stability are conducive to the development of commodity exchange; On the other hand, if the country splits and the war continues, it will seriously affect the exchange of goods. ③ Traffic conditions. For example, the construction of Chidao in the Qin Dynasty, the opening of the Grand Canal in the Sui Dynasty and the dredging of the Grand Canal in the Yuan Dynasty are all conducive to the development of domestic trade. The smoothness of the Silk Road on land and the Silk Road on the sea is also conducive to the development of foreign trade. ④ Monetary development. The unification of currency and the appearance of paper money facilitate the exchange of goods and promote the development of commerce. The rulers of the Southern Song Dynasty encouraged overseas trade, which brought the prosperity of overseas trade in the Southern Song Dynasty.