Answer:
The Nazis established concentration camp to exterminate the Jews and to have them do manual work for them. The Jews were seen as subhumans and weren't fit to live so that's why the killed them and they used them for work so they could benefit off of them but at the same time spend nothing on them since they were not given humane hospitality.
Explanation:
the answer is to this question is D
Germany
Austria
Japan
those are some countries that were destroyed and rebuilt
