Question

What was the first killing center or extermination camp in poland

Answer 1

the Nazis established six killing centers in former Polish territory—Chelmno, Belzec, Sobibor, Treblinka, Auschwitz-Birkenau (part of the Auschwitz complex), and Majdanek.

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Answer 2

The first assassination city was the extermination camp of Chelmno, in Poland, where was the trial for the first occurrences of gas killings were performed. Chelmno started to kill whole extradition trains from November 1941 on. Then reached Belzec, Sobibor, Auschwitz, Maïdanek, and Treblinka. The extermination camps performed a fundamental function in the Holocaust.