The capitalist world market was initially formed in the middle and late19th century. The new air route was opened in 15 and 16 centuries. Hope to adopt.

Reasons: ① With the expansion of industrial revolution and bourgeois revolutionary reform, capitalism in Europe, America and Japan has developed rapidly. At the same time, the capitalist powers stepped up their foreign aggression and expansion, established a series of colonies and semi-colonies around the world, broke their closed economic structure and made them part of the capitalist world market. Advanced means of transportation, such as trains and ships, made it easier for the powers to export a large number of industrial products, plunder raw materials and even invest in factories.

Impact: ① The initial formation of the capitalist world market has further promoted the development of capitalist economy. (2) This market is unequal. The capitalist powers plundered the colonies and semi-colonies, but at the same time objectively, it also greatly impacted the backward social and economic system of the colonies and semi-colonies, which is conducive to the development of capitalism and social progress. (3) Further strengthen the interconnection between countries and regions in the world and promote the overall development of the world.

This is my revised answer, I hope it is useful.