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But the Eastern European Plain in Russia was different; although the climate was relatively cold, most of the area was still quite suitable for living. As long as one didn't get too close to the Arctic Circle, the vast Eastern European Plain was almost entirely a habitable region.
Additionally, due to the large rural population within Russia, many countryside areas were densely populated, which also increased the mileage of railways and highways that needed to be built.
The Russian Government had not managed to fully refurbish the railways and highways in the Eastern European region even until now, proving the difficulty of constructing a massive network of railways and highways for a country with vast land and an even larger population.
Of course, inconvenient transportation was a major disadvantage for Russia during peacetime, but during wartime, it became the best method to delay the enemy's advance.