It was the Mongols that invaded Russia
It has helped develop the nation by allowing faster transportation of materials needed to colonize.
In 1922 the Communist<span> Reds were victorious, and formed the Soviet Union. Lenin died in 1924, starting a power struggle which ended with Joseph Stalin seizing power. He was the leader of the </span>Communist<span> Party until 1953.
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Post-war, all of the combatants were rather weighed down by large amounts of debt they had accumulated during the war. This, combined with rapid overproduction of currency, caused hyperinflation and doomed global economies, later leading to the Great Depression.