The word "Holocaust," from the Greek words "holos" (whole) and "kaustos" (burned), was historically used to describe a sacrificial offering burned on an altar.
In the south, Ukrainians killed about 24,000 Jews and some went to Poland to serve as concentration and death-camp guards.
After December 1941 defeat of the German army in its attempt to take Moscow and the entry of the US into World War II on December 11, the German authorities understood that Germany would have to fight a long war.
They had begun to methodically kill Jews in specially construted killing centers, German officials the Auschwitz-Birkenau kiling center played a significant role in th German plan to kill the deportatio of Europen Jews to killing centers.
On May 7,1945 Germany officially surrendered to the Allies, bringing an end to the European conflict in World War II.
After liberation, many Jewish survivors feared to return to their former homes because of the antisemitism(hatred of Jews) that persisted in parts of Europe and the trauma they had suffered.