Plz help! Due tonight! How did the Holocaust affect Jews and other targeted groups living in territories controlled by Nazis?

There are many things that affected Jews in Nazi controlled territories. Some examples could be the ghettos (high population density caused quick spread of disease, lack of food and clean water, little to no personal space), mistreatment (poor health services to those who did not fit the standards), closing businesses (many people boycotted stores run by jews), theft and violence against POC, Jews, and “undesirables” was allowed with no major consequences.

Explanation:

cuba is a multi-ethnic nation