北宋开封城繁荣的原因:江南农业的发展为它提供了雄厚的物质基础;国家政策的改变是它发展的政治基础;优越的地理位置则是它发展的交通基础。而汴河由于是联系北方政治军事中心和南方经济中心的纽带,为开封运送了大量的物资,被看做是生命线。因此托起了开封的繁荣。 The reason why the prosperity of the city of Kaifeng in the Northern Song Dynasty was due to the fact that the development of agriculture in the southern part of the Yangtze River provided a solid material foundation for it; the change of state policy was the political basis for its development; the superior geographical position was the transportation foundation for its development. The Fei River, as a link between the northern political and military center and the southern economic center, sent a large amount of supplies to Kaifeng and was regarded as a lifeline. So hold up the prosperity of Kaifeng.