What are the historical reasons for the great differences between Jiangsu and Zhejiang languages and dialects?

Wuyu District is rich in natural products and few in natural disasters. Historically, whenever there is a disaster in the north, people will keep pouring in. Most of these people settled down and did not move away on a large scale because of other disasters. These immigrants often form villages and communicate with local people, but the general environment is that Wu dialect is a strong language, so Wu dialect with different flavors is produced.

2. There are not many long-distance services.

In ancient times, agriculture was emphasized and commerce was suppressed, which led to the fact that most local people were less engaged in long-distance commercial activities. So beyond a certain distance, there is not so much communication.

3. There is no strong center.

Whether it is an economic center or a political center. The development of Wu dialect area is relatively balanced, and there is no strong center to rule the whole area, even today. Although the process of urbanization and modernization has led to the gap between several big cities and villages in Wuyu District, it is still obviously different from other regions. The township economy in this area is not obviously weaker than that in the city, which is like a scattered point to drive the overall economic development, rather than a center to drive the surrounding areas.

4. The water network is dense

Although the water network is dense, it is mostly small rivers, which not only makes people inconvenient to walk, but also does not play a good role in commercial transportation.