The correct answers to these open questions are the following.
The two different types of Nazi Camps were the following.
The Nazi built two types of Nazi camps: concentration camps and extermination camps.
Concentration camps were used by the Nazis to take prisoners and contain them. In these camps, Jewish people were prisoners and were forced to labor in extremely harsh conditions. Thousands of people died in these camps due to the exhaustive work.
On the other hand, extermination camps were built to kill people and bury them there. Nazis built gas chambers where they killed millions of people.
Sobibor was an extermination camp and was located in Poland.
Russian Prisoners of War (POWS) were sent to Sobibor because there they could die from mass starvation.