Answer:
Russia concerned both of them because at that time in the war Russia was the powerhouse, they had it all, technology wise and climate wise. They could not be attacked because of their harsh winters and they could attack at any time because they had the upper hand in military technology.
C. <span>Early humans were forced to move to new environments.
Hope I helped :)</span>
It’s in the picture to at least help you out from the best of my knowledge
