Explain: how did germany begin to establish a new order?

Nazi Germany directly annexed some areas, such as western Poland, and made them German provinces. Most of occupied Europe was run by German military or civilian officials. Nazi administration was especially ruthless. Nazis began to put their racial program into effect soon after the conquest of Poland.

Germans Stopped at Stalingrad.

Explanation:

This is the answer because this was the largest turning point in the war. When Germany invaded Russia, They were defeated in Stalingrad and the Red Army  started to push the Germans back. This was not the best Idea by Hitler because he attacked during the Russian Winter and the main reason they attached Stalingrad was because the leader of Russia's name was in it.