Final answer:
The most commonly affected sites in the history of the Holocaust were the extermination camps, specifically located in occupied Poland. The underlying pathology of the Holocaust was systematic genocide, with the goal of exterminating millions of individuals, primarily Jews and other minority groups. The extermination camps were not the same as concentration camps, which were designed for imprisonment and forced labor.
Step-by-step explanation:
The most commonly affected sites in the history of the Holocaust were the extermination camps. These camps were specifically designed for the purpose of killing people, rather than housing prisoners for slave labor like concentration camps. There were a total of six extermination camps, all located in occupied Poland. The most infamous extermination camp was Auschwitz, which not only killed victims but also temporarily used some of them for slave labor.
The areas of operation (AOO) were mainly in Europe, specifically German-controlled territory and occupied Poland. The extermination camps were located near rail lines and hidden in forests away from major population centers.
The underlying pathology of the Holocaust was systematic genocide. The Nazis sought to exterminate not only Jewish people, but also other minority groups such as Roma (gypsies), gays and lesbians, Jehovah's Witnesses, and political opponents. The estimated number of people killed in the Holocaust is around 6 million Jews and at least 3 million members of other minority groups.