research based on some articles

I have two questions, the answers for them is based on the articles that I will post down and the Most important thing is Thesis Statement

Question 1. What were the Nazis’ racial theories concerning Slavic peoples such as Poles, Russians, Ukrainians, Belorussians (White Russians), etc. who lived in Eastern Europe, and how did the Nazis’ desire for eastward expansion shape these theories?

Question 2. How did these racial theories affect the conduct of the war on the Eastern Front as well as the Nazis’ administration of conquered territories in Eastern Europe? In particular, how did these theories shape the treatment of Soviet prisoners of war?

Article ( 1+2+3+4 ) for question #1

Article ( 5) for questoin #2