Chang'an decline,ugg boots sale, on the one hand, and over-exploitation of the Guanzhong Plain, causing ecological imbalance. From another aspect, the eastward shift of the economic center of China, it will also lead to the political center has gradually eastward. Chang also brought the decline of a chain reaction, and along Chang'an and Luoyang also gradually decline. Since Luoyang than rely East Chang'an, just a moment late. Later Tang Dynasty was set up in the capital city of Luoyang, Luoyang, but it is only the supernatural Bale. Later Tang is also the last one in the capital Luoyang dynasty, though, this is a separatist regime.
To the Northern Song Dynasty, Kaifeng became the commercial center of the East ( Visible "painting" ). It is estimated that the Northern Song Dynasty, when Kaifeng population of about 500,000 or so, though not before the Tang Dynasty Chang'an Baghdad and the Arab empire so magnificent, but also the prosperity of their business dealings and Baghdad Chang'an year unmatched. After the demise of the Tang Dynasty Kaifeng can become, over time the political center of China. The traffic is developed with cheap ugg boots not unrelated. Before the Song Dynasty, Kaifeng city is the commercial hub of the Central Plains region, coupled with the Five Dynasties and Ten Kingdoms of civil strife, many of the capital regime set up in more recent places, but also achievements in Kaifeng.
But conveniently Kaifeng city also has a fatal flaw,cheap uggs, said the lack of geographic natural barrier. No Chang'an and Luoyang, Kaifeng city 's geographical advantage, only a natural barrier to the north of the city of Kaifeng is one of the Yellow River, and one winter, the Yellow River once frozen, even this natural barrier nor a way, just as the enemy over the Yellow River Walk on land between. Without natural barriers, will inevitably result in increased air max 1 use of artificial fortifications, if you want to guarantee security in the capital, the capital of troops must be deployed to the highest, and the walls built to the most rugged.
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