Imperial City When the southward Guangnan kingdom meets the southward Khmer dynasty Geographically, the central part of Vietnam is mountainous, and the land is not as fertile as the Red River Delta in the north, and the development of agriculture is inherently disadvantageous. Nam_Tien Photo Credit: Own work by uploader CC BY SA 3.0 Map of Vietnam's "Southward Progress". The blue area at the bottom is the Lower Khmer region, including parts of present-day Vietnam and Cambodia.

There are many mountains in China and Vietnam, and the railway from Da Nang to Hue is intertwined between mountains and seas Photo Credit: Double-A There are many mountains in China and Vietnam, and the railway from Da Nang to Hue is staggered photo color correction services between mountains and seas The reason for going south is also very simple. The cost of conquering the north is too high, and the Changshan Mountains in the west are a natural barrier. There are also many highland ethnic groups living here, and the rule is not good. The south is relatively the best choice. First, you can take the opportunity to develop monsoon trade and make a lot of money.

Second, the flood plains in the lower reaches of the Mekong River have rare fertile soil. At this time, the Champa regime has already existed in name only. time issue. Figure 10_The most important Thu Bon River in Hoi An Hoi An is an important commercial port built by Quang Nam. The picture shows the most important Thu Bon River in Hoi An At this time, the Ayutthaya Dynasty was forced to leave the Khmer Dynasty in Siem Reap (see above: [After the fall of Angkor] The Khmer Dynasty retreated: Siam rose to fight back east, Angkor fell and the capital moved south. ), the center of development also follows the.