Traditional commercial routes and new routes

(1) Information: The leading country of the old trade route is China, with Asia as the core; After the opening of the new air route, the leading countries of commercial trade are European countries, with Europe as the center; The traditional trade route is between Asia, Europe and Africa. After the opening of the new air route, business contacts have expanded to the whole world, and the world market centered on Europe has begun to take shape. (6 points)

(2) Introduce and popularize high-yield crops such as corn and sweet potato, enrich crop varieties and change the structure of agricultural products; The grain output has increased greatly, which has eased the pressure of population explosion; It has promoted the development of agricultural commercialization, improved agricultural production efficiency and improved people's lives. Foreign trade exceeds demand, and American silver flows into China in large quantities. (8 points)

Test analysis: (1) As can be seen from Figure 1, the leading country is China, and the core is Asia; Figure 2 shows that the leading country is Europe. It reflects the changes of world trade from Asia to Europe and from the Mediterranean coast to the Atlantic coast before and after the opening of the new air route.

This topic investigates the influence of the opening of new air routes on China.