Hitler took control of the western forts so they couldnt defend themselves
1896: The idea of striking the Yukon Gold Rush made 100,000 of all different people abandon their homes and embark on an extended life-threatening journey across treacherous icy valleys and rocky terrain.
The Dead Horse Trail: 3,000 horses lay dead on White Pass
Russia defeated Napoleon by starving and freezing his army to death. During the invasion, French troops were forced to march through miles of snow in extremely cold weather, without the proper clothing and supplies to survive it. The Russians purposefully burned down their own villages so that the French could not raid them for supplies. By the time Napoleon reached Moscow, his army's morale was extremely low and he had sustained heavy losses, and he was forced to retreat soon afterward. Russia's cold weather that makes it almost impossible to invade is often called 'Russian Winter' or 'General Winter'.
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It was "Karl Marx" who called for a proletarian revolution to overthrow the bourgeoisie and establish a classless society, since Marx felt that capitalism was an exploitative and extractive institution that was inherently unfair to working-class people.