The Wall.
to keep out the Mongol invaders
To protect Chinese villages from Mongolian invaders.
They built it because they wanted to keep invaders out. ------------------------------------------------------------------------ Specifically, the emperor was afraid of being conquered and killed by the Mongolian and Hun tribes north of Imperial China.
Qin Han
It was built to protect the country from raids.
Emperor of Qin Dynasty wanted to protect his people from the mongolian invaders to the north.
It was built to protect China from Mongolian invaders.
He was a Mongolian and the son of Genghis Khan.
No, it isn't. Chinese and Mongolian are so different, first is the writing( As i am a Chinese person, I think Mongolian is very intricacy than Chinese, sometimes maybe it is just is few word then can let you know the meaning in Chinese, but in Mongolian it will take a lot of word!), second is the sound( wow, that is very different, everyone can heard that is different.)Linguistic Answer:No, the two languages are unrelated. Mongolian is part of the Altaic family, and Mandarin Chinese is part of the Sino-Tibetan family.
to keep out the Mongol invaders
Atitla The Hun. Kublai Khan was the first non han Chinese to rule/conquer china but mongolian is part of the 56 races of the Chinese so mongolain is Chinese.
It was used when china had invaders coming, this paper money protected them and the Chinese gave the invaders some money to go away.