How did the railway and the camps function as one large machine of death?

Remember you are asked to accomplish 2 things in the essay. The first is to compare and contrast the films you watched. (Choose at least two films.) How are they accurate or well told and how are they not as good as some others.

The second thing is to address a topic (or question) of your choice.So for example one topic could be, how did the railway and the camps function as one large machine of death? Describe it.