Explain how some collaborators make genocide possible

During the World War II, the Germans were very powerful, having large, well trained, and well equipped army, but that army was not endless and was not able to control everything. That is where the collaborators came to help. The Germans had numerous collaborators, and they were the ones that were doing the things on the terrain where the German army was not able to be present. The collaborators were loyal to Hitler and they obeyed his orders and ambitions, and one of those was to eliminate some ethnic groups. The Germans managed to get lot of people from their primary target groups, Jews, Slavs, and Gypsies in their own territory, Poland, Czech Republic, Slovakia, and they were performing genocide over them. In order to get the people of those ethnic groups, in the other territories, the collaborators were doing the job, such as the Hungarians, Lithuanians, Bulgarians, Croatians managed to get hundreds of thousands of people and send them into the concentration camps where lot of them lost their lives.

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