Final answer:
The BBC documentary 'Auschwitz' primarily focuses on the crimes against humanity committed at the Auschwitz concentration camp during the Holocaust.
Step-by-step explanation:
Main Focus of the BBC Documentary 'Auschwitz':
The main focus of the BBC documentary "Auschwitz" is on the crimes against humanity committed during the Holocaust, particularly at the Auschwitz concentration camp complex. This includes the systematic murder of Jews and others, and the appalling conditions and treatment they endured. It also touches on the administrative and logistical aspects managed by SS officers such as Adolf Eichmann in the deportation and extermination processes. Importantly, the documentary examines the vast scale of the genocide, highlighting the six million Jews killed by the Third Reich and the inhumane mechanisms, like gassing, used to carry out mass murder.