The population of the USSR's (today known Russia) in 1939 was 168,524,000 but by 1946 it was 170,548,000. There is a good reason for this, before WW2, the Baltic states wasn't part of the USSR but in 1941 once the Baltic states becomed part of the USSR, the general population of the USSR was 196,716,000, then during WW2, around 25 Million Soviets died, which lead to the population being around 170 Million by 1946.
The entire population of the USSR / CCCP was 170.5 Million in 1939. It went up to 190 million in 1940 if Eastern Poland and a few other annexed areas are included.
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The estimated number of Russian casualties at the end of the Second World War was 23,400,000.
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Tsar Nicholas II was the leader of Tsarist Russia in World War 1.
== == Russia and Germany were never allies during World War I. They were on opposite sides from the beginning.
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Russia was not an ally of Germany in World War 1.
During World War I, they were at war from 1914 until 1918. During World War II, it was 1941-1945.
Joseph Stalin was Russia's ruler during World War II.
Czar Nicholas II controlled Russia during World War I. He lost power during the final year Russia was in the war and the Alexander Kerensky was in power for the final months before Lenin took over and negoitated Russia's surrender to Germany.
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