Between the 1st and 2nd century outside the border of the Roman Empire, outside the line, today occupies the central European region of Germany and lives in a German tribe. In Germania, the Roman historian Cornelius Tacitus introduced the lifestyle and organization of these strange barbarians. These descendants of modern Germans have proved to be special as they adopted the qualities of many typical barbaric cultures, but at the same time the virtue of their practice is better suited for advanced civilization.
For example, the Romans spent hundreds of years to fight against most Germanic barbars outside the Rhine and Danube river's border (restricted area). Barbarians often attack the territory of Rome, but most of them are small invasions, but over time they have demonstrated the ability to initiate larger and more powerful invasions. Chinese barbarians and frontiers have a long history. Over the past 2000 years, a series of Chinese nations have come into contact with various riding herds of the Eurasian prairie and confronted. Eurasian prairie nomads such as Oxon (Hung), Shenpi, Turks, Mongolia are relatively small, but bring a powerful threat like a fast-moving horse archers. Threaten settlement to the Chinese population from the threat of intrusion into the grassland
It can be said that nomads in the Eurasian prairie are the most powerful barbarians in history. At one point, various Eurasian grassland nomads threatened not only the civilization of China, but also the civilizations of India, the ancient Middle East, the former Islamic Persia, the Roman Empire, medieval Europe and the Middle Ages Islamic world. I found out that the grand unification theory of barbarians is relatively useful and still has no burden so I ignore the thought of anthropologists (I have a sort of contempt for the subject I majored in I admit that it is). There is a model that can not be denied in the history of barbaric civilization. The most important of these is the expansion of the organizational unit in which barbarians live.
During the decline of the Roman Empire, the emigration of a group of powerful and rude people began to change the lives of Europe. They are German barbarians, or German tribes rushing the Rhine and the Danube to the Empire. So they accepted Christianity. The combination of barbaric vitality and religious spirit brought Europe to the limit of modern times. This period from ancient times to the present age is called the Middle Ages. In the Middle Ages, it is about 1000 years old, from AD 500 to around AD 1500. However, the change from ancient to medieval custom becomes difficult to say precisely when medieval times began. Several historians say that the medieval began when the savage man Oddseln beat the emperor Romulus Augustus in the year 476 and finished the Western Roman Empire. Other historians gave 410 years when West Gothic king Alarric fired Rome. Others say the AD 500 is even later.