No gallery was provided, but anyways -
Those extermination camps were in close proximity to railway systems and ghettos (enclosed community of Jews). For the goal to be fulfilled, the Nazis had to put the Jews in these ghettos, so, they could later transport them (via train) to the camps.
Unity was brought mainly by the decades-long process of setting up and expanding the European Union in the aftermath of WW 2; also the disappearance of the Iron Curtain in 1989 was a major factor in uniting Europe.
Major disruptive factors were of course the two World Wars, and before 1989, the existence of a Communist-dominated Eastern Europe versus Western Europe.
Answer:
The answer are:
1. They targeted all opposition to Nazi rule.
3. They had the power to arrest anyone for any reason
5. They used terror, violence, and intimidation against people
Answer:
The answr should be the last one D.