For the Xiongnu, many people should be familiar with it. This is a nomadic people active on the northern border of China, who have been living in the north as early as the Spring and Autumn Period and the Warring States Period. At that time, the northern princely states had already begun to build the Great Wall. When qin shi huang arrived, in addition to sending troops to attack, the rest was mainly to repair the Great Wall.
During the Han Dynasty, Emperor Wu of han sent an army to conquer the Xiongnu. At that time, the Xiongnu suffered a crushing defeat and left a song with lyrics to the effect that after the Xiongnu lost qilian mountain, there was no longer a place to graze; after the loss of Yanzhi mountain, the people lived every day in horror. (The loss of me qilian mountain, so that my six animals will not rest; Lose me the mountain, so that my married wife has no color)

Of course, there are a lot of things going through in the middle. The Huns also rose and fell, and later split into two groups. One remained in China, changed its surname to Liu, and established a small dynasty called "Han Zhao". Because the Han Dynasty was once friendly with the Xiongnu, this branch of Xiongnu occupied the Central Plains in the name of inheriting the Han Dynasty. The other marched westward towards Europe.
When the Huns moved west, there was a powerful Roman Empire in Europe. The Roman Empire had a very important weight in Europe. And the Roman Empire was so wealthy that the Roman Empire was almost indulging in pleasure. There is a saying that Rome is moving from this hangover to the next. The experience of history tells us that a rich place, if it is not supported by strong strength, is a piece of fat meat, a prey that is easy to attract wild beasts.
Around the Roman Empire, there are indeed many Manchu tribes, Goths, Germans, who want to take advantage of the Roman Empire. But I didn't dare to move, or I didn't dare to rush too far ahead. After all, although the lion is sick, if he wants to get food from his mouth, he has to weigh his own skills.
Until the arrival of the Huns, the Huns had not yet had time to contact the Roman Empire, and there was still a distance between the two sides. The first people to come into contact with the Huns were these barbarian tribes around the Roman Empire. Although these barbarian tribes were horizontal, they were beaten like something after encountering the Huns. The territory is more and more occupied, and the days are almost over. Neither the Germans nor the Goths could resist the Huns.
There was no way, the Huns forced them, they had to fight the Roman Empire hard and desperately. This situation is typical, soft is afraid of hard, hard is afraid of death. The Roman Empire was divided into two parts, the Eastern Roman Empire and the Western Roman Empire. Because of its location, the Western Roman Empire was the first to be invaded by these barbarian tribes.
In the beginning, the Western Roman Empire wanted to win over some barbarian tribes and help it fight other barbarian tribes. This is also a common means used by big countries, find a bunch of little brothers to help them fight, and pay for their own weapons and territory. But the Western Roman Empire did not expect that after these little brothers learned their skills, they not only did not want to deal with foreign enemies together, but wanted to scrape oil from the boss.
For these barbarian tribes that defected to themselves, the Western Roman Empire was also very arrogant to them, and cruelly suppressed them at every turn. In this way, loyalty is gone, but instead it is met with crazy revenge.
And as the Huns attacked more and more ferociously, the attack became more pronounced among the barbarian tribes that did not defect to the Western Roman Empire. They all wanted to take the cities of Rome and use them to hide from the coming Huns.
As a result, the Roman Empire became a situation of internal and external difficulties. Internally, the barbarian tribes that have defected to themselves are engaged in rebellion. Externally, barbarian tribes that have not turned to themselves are plundering their land, money, and people. And all this was brought about by the Xiongnu who had little to do with him.
But in the face of this situation, the Western Roman Empire could not break free, it was firmly locked. Until the end, the Visigoths killed the emperors of the Roman Empire, and the Germans divided up the lands of the Roman Empire. The Huns did not stop, and they also entered the Roman Empire, occupying the Hungarian plains and seizing territory. Friends who are interested in history can pay attention to the headline number: Brain Hole Alien, an alien who studies the history of the earth