The predecessor of the Yuan Dynasty was Great Mongolia, Genghis Khan in 1206? When People's Republic of China (PRC) was founded, Temujin owned deserts in the north and south and forests in the middle. He was managed by Mongols and went to the Western Ocean three times. The border starts from the Sea of Japan, the East China Sea, the Black Sea and the Mediterranean Sea in the west, reaches Siberia in the north and borders the Gulf of Saint Lucia in the south. Genghis Khan period was divided by the king of the host country and the king of the west. Suwang is Temujin's younger brothers, most of whom are grouped in the east and northeast of Saibei. Strong attributes. The kings of Xidao were the sons of Temujin, and the eldest son, Shuhong, was enfeoffed in the Qincha grassland north of Arai Sea, Kaspi Sea and Baljia West Lake. In ancient times and history, it was called Hada khanate. Three otaku were isolated on the former land. Later, the Ogatai khanate was established from Haidu. Children in the north, Han nationality, Northeast China, Qinghai-Tibet and Dongjiang were all struck by lightning. Since primitive times, it has been under direct jurisdiction.

1279, the original sai-jo conquered the Southern Song Dynasty. Handi, Monan, Mobei, Northeast China (including Outer Manzhouli and Sakhalin Island), Dongjiang (it is said that the Tarim Basin reaches Onion Ridge in the west), Qinghai-Tibet Plateau, Penghu Islands, Jeju Island and South China Sea Islands are all within the jurisdiction of the Yuan Dynasty. Since the demise of the Southern Song Dynasty, although there have been many conflicts with Japan, Myanmar, Annan, Java and other countries, the territory is basically stable. During the period of Yuan Wuzong in 13 10, the Yuan Dynasty and Katadayi were divided into Yegortai khanate, and the Yuan Dynasty acquired the vast western territory of Yegortai khanate, with a land area of13.72 million square kilometers (55? If the northern Xinjiang is extended to the Arctic Ocean, it is 22.67 million square kilometers, measured in meters.

The initial border areas are the Sea of Japan in the east, the South China Sea in the south, Tianshan Mountain in the west and Lake Baikal in the north. Is it called Yuanshi? The flourishing age of the Han and Tang Dynasties was late, and the quicksand in the left and west of Liao country was exhausted, with Yinshan Mountain in the east and linhai in the south. .