Permafrost in excess of Substantially of Siberia is A serious impediment to progress; volcanic action from the Kuril Islands; volcanoes and earthquakes about the Kamchatka Peninsula; spring floods and summertime/autumn forest fires through Siberia and areas of European Russia that the development in the East Slavs passed as a result https://garrettp39yx.bloggerchest.com/30706623/a-review-of-russia