Tang dynasty territory
So how to calculate the territory area of the Tang Dynasty? It can only be investigated through the ethnic relations between the Tang Dynasty and the surrounding areas. First of all, the Tang Dynasty set up 10 roads in the Han Dynasty, namely Guannei Road, Henan Road, Hedong Road, Hebei Road, Shannan Road, Longyou Road, Huainan Road, Jiangnan Road, Jiannan Road and Lingnan Road. During the Kaiyuan period, Shannan Road was divided into Shannan East Road and Shannan West Road, Jiangnan Road was divided into Jiangnan East Road, Jiangnan West Road and Guizhou Middle Road, and Gyeonggi Road and Duji Road were added, which was called "Kaiyuan 15th Road" in history. This is the most stable ruling area in the Tang Dynasty, covering an area of about 3.5 million square kilometers.
Ten Daoism in Early Tang Dynasty
Let's look at the military control zones in the Tang Dynasty. The Tang Dynasty was founded in 6 18, and unified the whole country (Han area) in 628. Soon after, he began to expand Zhang Zhilu. In 630, Li Shimin's Tai Sect Li Jing and others went to destroy East Turkistan. Emperor Taizong had a great shock in Mobei and was honored as "Tiankhan" by nomadic people. But Xue Yantuo soon became strong and occupied the native land of East Turkistan. In 639, Emperor Taizong established Ashina Seymour as the Khan of East Turkistan, and the two major regimes in Mobei confronted each other. It was not until 647 that the Tang Dynasty completely defeated Xue Yantuo khanate and really controlled Mobei area. In 647, Yanran Duhu House was established in the surrendered city (now Urad Middle Banner, Inner Mongolia) in the Tang Dynasty, which governed the Mongolian Plateau area from the north of the Great Wall to Lake Baikal, with a total area of about 3.5 million square kilometers. In 663, the Uighur tribe moved northward (now Hang 'ai Province of Mongolia) and was renamed Hanhai Duhu House. In 669, it was renamed Anbei Duhu House.
Emperor Taizong
In terms of the western regions, in 630, Shi Wannian, the duke of Yiwu (Hami), descended to the Tang Dynasty, and Xizhou was established in the Tang Dynasty, which was the beginning of the expansion of the Tang Dynasty to the western regions. In 639, the Tang Dynasty took the sweat floating map of Yehutun Army in West Turkic (now Jimsar County) and set up Tingzhou. In the same year,, and others were ordered to attack Gaochang, where Emperor Xuanzong of the Tang Dynasty set up Anxi Dubao. Anxi Khufu governs 2 million square kilometers of land in the western region.
At this time, West Turkistan was divided and gradually declined. In 657, Su et al. were ordered to destroy the western Turkic, establish Hemengchi as the two capitals, and Anxi as the capital. Here, the Central Asia region from the west to the Aral Sea was incorporated into the territory of the Tang Dynasty. In 702, Beiting Duhu House was established, which governed the area north of Tianshan Mountain, and Anxi Duhu House governed the area south of Tianshan Mountain. The two capitals * * * govern more than 3 million square kilometers of land in the Western Regions and Central Asia. So far, the area of the Tang Dynasty has exceeded 6,543,800 square kilometers.
The heyday of the Tang Dynasty (657-682)
In the northeast, Koguryo was conquered in 644 and finally died in 668. After the death of Koguryo, the Tang Dynasty set up the Andong Duhu House here. However, it should be noted that until the Wu Zetian period, the jurisdiction of Andu Hufu still did not go deep into the Songhua River Basin, but only in the Liaohe River Basin and the northern part of the Korean Peninsula, covering an area of about 500,000 square kilometers.
During the expansion of the western regions and northeast China, the control of the Tang Dynasty on the Mongolian Plateau weakened. In 682, the ancient capital of Ashina, Lu, rebuilt the East Turkic khanate, and Abe Duhu's government had to move to Juyanhai (now the ancient Ejina Banner in Inner Mongolia) and then to Gansu, which marked the end of the Tang Dynasty's control of the Mongolian Plateau for only 35 years. Therefore, the peak of the Tang Dynasty100000 square kilometers only lasted for 25 years.
The territory of Wu Zetian-Tang Xuanzong period (682-755)
During the period of Wu Zetian and Xuanzong in Tang Dynasty, the Arab Empire rose, and the land west of Mausoleum was basically controlled by Arabia, and the Tang Dynasty retreated to the western regions. During the reign of Emperor Xuanzong of the Tang Dynasty, the Tang Dynasty nominally awarded the titles of Northeast Bohai Governor's Office, Shiwei Governor's Office and Heishui Governor's Office, but it did not actually control them. Therefore, the Heilongjiang River Basin was not considered as the territory of the Tang Dynasty. The land area from Wu Zetian to Tang Xuanzong was about 6.5 million square kilometers, which lasted for 73 years.
The territory of the late Tang Dynasty (755-907)
During the Anshi Rebellion, the Tang Dynasty basically withdrew its troops from the western regions, and the Tang Dynasty began to shrink in an all-round way. Its territory is only 3.5 million square kilometers of the Han Dynasty. Until the demise of the Tang Dynasty, the territory of the Tang Dynasty remained within this range.