Based on analysis of the causes of the great migrations people in the past, we can identify some patterns and to draw the following conclusions: 1. On the global level is clearly visible is rather stable cyclical great migrations of peoples, and the duration of the cycle, since it is still uncertain, is in the range from 800 to 850 years. Attention is drawn to the fact that such displacement occurred on a global scale, at first glance, spontaneous, and actually – at one time, "Orderly," as if on command, or the wave of the conductor's baton. 2. With cycling 800 – 850 years, and other events related to the planetary scale, which will be discussed in future articles.
3. The very fact that the mass gathering specific people with lived-in area indicates that in this area living conditions have deteriorated so much that he was forced to migrate in search of a place fit for a better life. Of course, in many ways were the relations between displaced and local populations. Someone drove from their homes, with someone got on, someone offered resistance. Somewhere settlers found themselves in the majority, where were they outnumbered the locals. In communication process immigrants and local residents formed a new culture, new language was born, there was incest, established new relationships between people, resulting in the new nation, languages and cultures, which eventually became the basis for the formation of new civilizations. 4. The reason for the peoples of the planet to the mass displacement of the evidence of written sources, legends, legends, chronicles, archaeological studies, and so was the change in both climatic and environmental conditions.