Answer:
True
Explanation:
The topography of the European continent is mostly flat, especially in the Eastern part of the continent where the Northern European Plain becomes the immense Russian steppe that is only separated from Asia by the Ural Mountains.
This open topography has made the continent vulnerable to invasion until recently. This is why Huns in the Late Antiquity, and the Mongols in the Middle Ages, were able to sweep the continent coming from the same place: Mongolia.
1 Which group is not represented in modern day Brazil?
2 What is the official language of Brazil?
1. Generically, the Indigenous peoples that live not only in Brazil but also in the entire American continent are called Indians
2. Portuguese
According to sociobiologists, social behaviour occurs in order to preserve one's genes in the population. Sociobiology is a branch of Biology which studies social behaviour in relation to evolution. They believe that social behaviour is affected by natural selection, by estimating that animals behave in certain ways that are evolutionary successful over generations.