Auschwitz-Birkenau, the largest Nazi concentration camp and extermination camp in operation during World War II. An estimated 1,000,000 to 2,500,000 prisoners died while held at the camp.

Auschwitz-Birkenau, the largest Nazi concentration camp and extermination camp in operation during World War II. An estimated 1,000,000 to 2,500,000 prisoners died while held at the camp.
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