Answer and Explanation:
Environmental possibility is a thought that states that nature provides a means of modifying the human race, but it is not the main factor in the evolution of society, being a mere supplier of resources. In this teaching, the human being is the main causative agent of evolution.
Geographical determinism is thought where nature is placed as the main modifying agent of society. This is because it is nature that promotes physical and psychic changes in human beings.
Environmental probabilism is the thought that allows human beings, to see the environment as the place that presents probabilities of occurrences of various events, which can be determined through the observation of environmental characteristics.
A bunch of Scandinavian warriors and merchants, who were actually called Varangians, started expanding into Russia during this time, subduing the local Slavic tribes & forming the Kievan Rus.
