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The sum of all the relative frequencies of a distribution will always add up to 1.
World War II Europe
The European theater of World War II, a global conflict lasting from 1939 to 1945 involving most of the world's nations including all the great powers.
Warsaw
The capital and largest city of Poland, known for its resilient history, including significant destruction during World War II and its subsequent rebuilding.
Stalingrad
The Battle of Stalingrad was a pivotal and brutal conflict between Nazi Germany and the Soviet Union during World War II, turning the tide in favor of the Allies on the Eastern Front.
Moscow
The capital city of Russia, known for its historical and political significance, as well as being a major cultural and scientific center.
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